# Basic Math Greatest Common Factor

Section 2: Number Relationships and Fractions: Lecture 2 | 12:47 min

In this lesson on greatest common factor, our instructor first begins with terms to review which include factor and an example . Then she dives into the two methods of solving greatest common factor. Four complete video examples round out the rest of this lesson.

Mary Pyo

Greatest Common Factor

Slide Duration:Table of Contents

5m 57s

- Intro0:00
- Vocabulary0:06
- Variable0:09
- Expression0:48
- Numerical Expression1:08
- Algebraic Expression1:35
- Word Expression2:04
- Extra Example 1: Evaluate the Expression2:27
- Extra Example 2: Evaluate the Expression3:16
- Extra Example 3: Evaluate the Expression4:04
- Extra Example 4: Evaluate the Expression4:59

5m 34s

- Intro0:00
- What Exponents Mean0:07
- Example: Ten Squared0:08
- Extra Example 1: Exponents0:50
- Extra Example 2: Write in Exponent Form1:58
- Extra Example 3: Using Exponent and Base2:37
- Extra Example 4: Write the Equal Factors4:26

8m 40s

- Intro0:00
- Please Excuse My Dear Aunt Sally0:07
- Step 1: Parenthesis1:16
- Step 2: Exponent1:25
- Step 3: Multiply and Divide1:30
- Step 4: Add and Subtract2:00
- Example: Please Excuse My Dear Aunt Sally2:26
- Extra Example 1: Evaluating Expression3:37
- Extra Example 2: Evaluating Expression4:59
- Extra Example 3: Evaluating Expression5:34
- Extra Example 4: Evaluating Expression6:25

13m 37s

- Intro0:00
- Place Value0:13
- Examples: 1,234,567.890:19
- Which is the Larger Value?1:33
- Which is Larger: 10.5 or 100.51:46
- Which is Larger: 1.01 or 1.102:24
- Which is Larger: 44.40 or 44.44:20
- Which is Larger: 18.6 or 16.85:18
- Extra Example 1: Order from Least to Greatest5:55
- Extra Example 2: Order from Least to Greatest7:56
- Extra Example 3: Order from Least to Greatest9:16
- Extra Example 4: Order from Least to Greatest10:42

12m 31s

- Intro0:00
- Decimal Place Value0:06
- Example: 12,3454.67890:07
- How to Round Decimals1:17
- Example: Rounding 1,234.5671:18
- Extra Example 1: Rounding Decimals3:47
- Extra Example 2: Rounding Decimals6:10
- Extra Example 3: Rounding Decimals7:45
- Extra Example 4: Rounding Decimals9:56

11m 30s

- Intro0:00
- When Adding and Subtracting0:06
- Align the Decimal Point First0:12
- Add or Subtract the Digits0:47
- Place the Decimal Point in the Same Place0:55
- Check by Estimating1:09
- Examples1:28
- Add: 3.45 + 7 + 0.8351:30
- Find the Difference: 351.4 - 65.253:34
- Extra Example 1: Adding Decimals5:32
- Extra Example 2: How Much Money?6:09
- Extra Example 3: Subtracting Decimals7:20
- Extra Example 4: Adding Decimals9:32

10m 30s

- Intro0:00
- Multiply the Decimals0:05
- Methods for Multiplying Decimals0:06
- Example: 1.1 x 60:38
- Extra Example 1: Multiplying Decimals1:51
- Extra Example 2: Work Money2:49
- Extra Example 3: Multiplying Decimals5:45
- Extra Example 4: Multiplying Decimals7:46

17m 49s

- Intro0:00
- When Dividing Decimals0:06
- Methods for Dividing Decimals0:07
- Divisor and Dividend0:37
- Example: 0.2 Divided by 101:35
- Extra Example 1 : Dividing Decimals5:24
- Extra Example 2: How Much Does Each CD Cost?8:22
- Extra Example 3: Dividing Decimals10:59
- Extra Example 4: Dividing Decimals12:08

7m

- Intro0:00
- Terms to Review0:07
- Prime vs. Composite0:12
- Factor0:54
- Product1:15
- Factor Tree1:39
- Example: Prime Factorization2:01
- Example: Prime Factorization2:43
- Extra Example 1: Prime Factorization4:08
- Extra Example 2: Prime Factorization5:05
- Extra Example 3: Prime Factorization5:33
- Extra Example 4: Prime Factorization6:13

12m 47s

- Intro0:00
- Terms to Review0:05
- Factor0:07
- Example: Factor of 200:18
- Two Methods0:59
- Greatest Common Factor1:00
- Method 1: GCF of 15 and 301:37
- Method 2: GCF of 15 and 302:58
- Extra Example 1: Find the GCF of 6 and 185:16
- Extra Example 2: Find the GCF of 36 and 277:43
- Extra Example 3: Find the GCF of 6 and 189:18
- Extra Example 4: Find the GCF of 54 and 3610:30

10m 3s

- Intro0:00
- Fraction Concept0:10
- Example: Birthday Cake0:28
- Example: Chocolate Bar2:10
- Simples Form3:38
- Example: Simplifying 4 out of 83:46
- Extra Example 1: Graphically Show 4 out of 104:41
- Extra Example 2: Finding Fraction Shown by Illustration5:10
- Extra Example 3: Simplest Form of 5 over 257:02
- Extra Example 4: Simplest Form of 14 over 498:30

14m 16s

- Intro0:00
- Term to Review0:06
- Multiple0:07
- Example: Multiples of 40:15
- Two Methods0:41
- Least Common Multiples0:44
- Method 1: LCM of 6 and 101:09
- Method 2: LCM of 6 and 102:56
- Extra Example 1: LCM of 12 and 155:09
- Extra Example 2: LCM of 16 and 207:36
- Extra Example 3 : LCM of 15 and 2510:00
- Extra Example 4 : LCM of 12 and 1811:27

13m 10s

- Intro0:00
- Terms Review0:14
- Greater Than0:16
- Less Than0:40
- Compare the Fractions1:00
- Example: Comparing 2/4 and 3/41:08
- Example: Comparing 5/8 and 2/52:04
- Extra Example 1: Compare the Fractions3:28
- Extra Example 2: Compare the Fractions6:06
- Extra Example 3: Compare the Fractions8:01
- Extra Example 4: Least to Greatest9:37

12m 49s

- Intro0:00
- Fractions0:10
- Mixed Number0:21
- Proper Fraction0:47
- Improper Fraction1:30
- Switching Between2:47
- Mixed Number to Improper Fraction2:53
- Improper Fraction to Mixed Number4:41
- Examples: Switching Fractions6:37
- Extra Example 1: Mixed Number to Improper Fraction8:57
- Extra Example 2: Improper Fraction to Mixed Number9:37
- Extra Example 3: Improper Fraction to Mixed Number10:21
- Extra Example 4: Mixed Number to Improper Fraction11:31

15m 1s

- Intro0:00
- Examples: Decimals and Fractions0:06
- More Examples: Decimals and Fractions2:48
- Extra Example 1: Converting Decimal to Fraction6:55
- Extra Example 2: Converting Fraction to Decimal8:45
- Extra Example 3: Converting Decimal to Fraction10:28
- Extra Example 4: Converting Fraction to Decimal11:42

5m 17s

- Intro0:00
- Same Denominator0:11
- Numerator and Denominator0:18
- Example: 2/6 + 5/60:41
- Extra Example 1: Add or Subtract the Fractions2:02
- Extra Example 2: Add or Subtract the Fractions2:45
- Extra Example 3: Add or Subtract the Fractions3:17
- Extra Example 4: Add or Subtract the Fractions4:05

23m 8s

- Intro0:00
- Least Common Multiple0:12
- LCM of 6 and 40:31
- From LCM to LCD2:25
- Example: Adding 1/6 with 3/43:12
- Extra Example 1: Add or Subtract6:23
- Extra Example 2: Add or Subtract9:49
- Extra Example 3: Add or Subtract14:54
- Extra Example 4: Add or Subtract18:14

19m 44s

- Intro0:00
- Example0:05
- Adding Mixed Numbers0:17
- Extra Example 1: Adding Mixed Numbers1:57
- Extra Example 2: Subtracting Mixed Numbers8:13
- Extra Example 3: Adding Mixed Numbers12:01
- Extra Example 4: Subtracting Mixed Numbers14:54

21m 32s

- Intro0:00
- Multiplying Fractions0:07
- Step 1: Change Mixed Numbers to Improper Fractions0:08
- Step2: Multiply the Numerators Together0:56
- Step3: Multiply the Denominators Together1:03
- Extra Example 1: Multiplying Fractions1:37
- Extra Example 2: Multiplying Fractions6:39
- Extra Example 3: Multiplying Fractions10:20
- Extra Example 4: Multiplying Fractions13:47

18m

- Intro0:00
- Dividing Fractions0:09
- Step 1: Change Mixed Numbers to Improper Fractions0:15
- Step 2: Flip the Second Fraction0:27
- Step 3: Multiply the Fractions0:52
- Extra Example 1: Dividing Fractions1:23
- Extra Example 2: Dividing Fractions5:06
- Extra Example 3: Dividing Fractions9:34
- Extra Example 4: Dividing Fractions12:06

11m 5s

- Intro0:00
- Distributive Property0:06
- Methods of Distributive Property0:07
- Example: a(b)0:35
- Example: a(b+c)0:49
- Example: a(b+c+d)1:22
- Extra Example 1: Using Distributive Property1:56
- Extra Example 2: Using Distributive Property4:36
- Extra Example 3: Using Distributive Property6:39
- Extra Example 4: Using Distributive Property8:19

16m 36s

- Intro0:00
- Length0:05
- Feet, Inches, Yard, and Mile0:20
- Millimeters, Centimeters, and Meters0:43
- Mass2:57
- Pounds, Ounces, and Tons3:03
- Grams and Kilograms3:38
- Liquid4:11
- Gallons, Quarts, Pints, and Cups4:14
- Extra Example 1: Converting Units7:02
- Extra Example 2: Converting Units9:31
- Extra Example 3: Converting Units12:21
- Extra Example 4: Converting Units14:05

13m 24s

- Intro0:00
- What are Integers0:06
- Integers are all Whole Numbers and Their Opposites0:09
- Absolute Value2:35
- Extra Example 1: Compare the Integers4:36
- Extra Example 2: Writing Integers9:24
- Extra Example 3: Opposite Integer10:38
- Extra Example 4: Absolute Value11:27

16m 5s

- Intro0:00
- Using a Number Line0:04
- Example: 4 + (-2)0:14
- Example: 5 + (-8)1:50
- How to Add Integers3:00
- Opposites Add to Zero3:10
- Adding Same Sign Numbers3:37
- Adding Opposite Signs Numbers4:44
- Extra Example 1: Add the Integers8:21
- Extra Example 2: Find the Sum10:33
- Extra Example 3: Find the Value11:37
- Extra Example 4: Add the Integers13:10

15m 25s

- Intro0:00
- How to Subtract Integers0:06
- Two-dash Rule0:16
- Example: 3 - 50:44
- Example: 3 - (-5)1:12
- Example: -3 - 51:39
- Extra Example 1: Rewrite Subtraction to Addition4:43
- Extra Example 2: Find the Difference7:59
- Extra Example 3: Find the Difference9:08
- Extra Example 4: Evaluate10:38

7m 33s

- Intro0:00
- When Multiplying Integers0:05
- If One Number is Negative0:06
- If Both Numbers are Negative0:18
- Examples: Multiplying Integers0:53
- Extra Example 1: Multiplying Integers1:27
- Extra Example 2: Multiplying Integers2:43
- Extra Example 3: Multiplying Integers3:13
- Extra Example 4: Multiplying Integers3:51

6m 42s

- Intro0:00
- When Dividing Integers0:05
- Rules for Dividing Integers0:41
- Extra Example 1: Dividing Integers1:01
- Extra Example 2: Dividing Integers1:51
- Extra Example 3: Dividing Integers2:21
- Extra Example 4: Dividing Integers3:18

11m 9s

- Intro0:00
- Combining Operations0:21
- Solve Using the Order of Operations0:22
- Extra Example 1: Evaluate1:18
- Extra Example 2: Evaluate4:20
- Extra Example 3: Evaluate6:33
- Extra Example 4: Evaluate8:13

9m 15s

- Intro0:00
- Operation as Words0:05
- Operation as Words0:06
- Extra Example 1: Write Each as an Expression2:09
- Extra Example 2: Write Each as an Expression4:27
- Extra Example 3: Write Each Expression Using Words6:45

18m 3s

- Intro0:00
- Equation0:05
- Definition of Equation0:06
- Examples of Equation0:58
- Operations as Words1:39
- Operations as Words1:40
- Extra Example 1: Write Each as an Equation3:07
- Extra Example 2: Write Each as an Equation6:19
- Extra Example 3: Write Each as an Equation10:08
- Extra Example 4: Determine if the Equation is True or False13:38

24m 53s

- Intro0:00
- Solving Equations0:08
- inverse Operation of Addition and Subtraction0:09
- Extra Example 1: Solve Each Equation Using Mental Math4:15
- Extra Example 2: Use Inverse Operations to Solve Each Equation5:44
- Extra Example 3: Solve Each Equation14:51
- Extra Example 4: Translate Each to an Equation and Solve19:57

19m 46s

- Intro0:00
- Multiplication Equations0:08
- Inverse Operation of Multiplication0:09
- Extra Example 1: Use Mental Math to Solve Each Equation3:54
- Extra Example 2: Use Inverse Operations to Solve Each Equation5:55
- Extra Example 3: Is -2 a Solution of Each Equation?12:48
- Extra Example 4: Solve Each Equation15:42

17m 58s

- Intro0:00
- Division Equations0:05
- Inverse Operation of Division0:06
- Extra Example 1: Use Mental Math to Solve Each Equation0:39
- Extra Example 2: Use Inverse Operations to Solve Each Equation2:14
- Extra Example 3: Is -6 a Solution of Each Equation?9:53
- Extra Example 4: Solve Each Equation11:50

40m 21s

- Intro0:00
- Ratio0:05
- Definition of Ratio0:06
- Examples of Ratio0:18
- Rate2:19
- Definition of Rate2:20
- Unit Rate3:38
- Example: $10 / 20 pieces5:05
- Converting Rates6:46
- Example: Converting Rates6:47
- Extra Example 1: Write in Simplest Form16:22
- Extra Example 2: Find the Ratio20:53
- Extra Example 3: Find the Unit Rate22:56
- Extra Example 4: Convert the Unit26:34

17m 22s

- Intro0:00
- Proportions0:05
- An Equality of Two Ratios0:06
- Cross Products1:00
- Extra Example 1: Find Two Equivalent Ratios for Each3:21
- Extra Example 2: Use Mental Math to Solve the Proportion5:52
- Extra Example 3: Tell Whether the Two Ratios Form a Proportion8:21
- Extra Example 4: Solve the Proportion13:26

22m 1s

- Intro0:00
- Writing Proportions0:08
- Introduction to Writing Proportions and Example0:10
- Extra Example 1: Write a Proportion and Solve5:54
- Extra Example 2: Write a Proportion and Solve11:19
- Extra Example 3: Write a Proportion for Word Problem17:29

16m 31s

- Intro0:00
- Similar Polygons0:05
- Definition of Similar Polygons0:06
- Corresponding Sides are Proportional2:14
- Extra Example 1: Write a Proportion and Find the Value of Similar Triangles4:26
- Extra Example 2: Write a Proportional to Find the Value of x7:04
- Extra Example 3: Write a Proportion for the Similar Polygons and Solve9:04
- Extra Example 4: Word Problem and Similar Polygons11:03

13m 43s

- Intro0:00
- Scale Drawing0:05
- Definition of a Scale Drawing0:06
- Example: Scale Drawings1:00
- Extra Example 1: Scale Drawing4:50
- Extra Example 2: Scale Drawing7:02
- Extra Example 3: Scale Drawing9:34

11m 51s

- Intro0:00
- Probability0:05
- Introduction to Probability0:06
- Example: Probability1:22
- Extra Example 1: What is the Probability of Landing on Orange?3:26
- Extra Example 2: What is the Probability of Rolling a 5?5:02
- Extra Example 3: What is the Probability that the Marble will be Red?7:40
- Extra Example 4: What is the Probability that the Student will be a Girl?9:43

35m 5s

- Intro0:00
- Percents0:06
- Changing Percent to a Fraction0:07
- Changing Percent to a Decimal1:54
- Fractions4:17
- Changing Fraction to Decimal4:18
- Changing Fraction to Percent7:50
- Decimals10:10
- Changing Decimal to Fraction10:11
- Changing Decimal to Percent12:07
- Extra Example 1: Write Each Percent as a Fraction in Simplest Form13:29
- Extra Example 2: Write Each as a Decimal17:09
- Extra Example 3: Write Each Fraction as a Percent22:45
- Extra Example 4: Complete the Table29:17

28m 18s

- Intro0:00
- Percent of a Number0:06
- Translate Sentence into an Equation0:07
- Example: 30% of 100 is What Number?1:05
- Extra Example 1: Finding a Percent of a Number7:12
- Extra Example 2: Finding a Percent of a Number15:56
- Extra Example 3: Finding a Percent of a Number19:14
- Extra Example 4: Finding a Percent of a Number24:26

32m 31s

- Intro0:00
- Solving Percent Problems0:06
- Translate the Sentence into an Equation0:07
- Extra Example 1: Solving Percent Problems0:56
- Extra Example 2: Solving Percent Problems14:49
- Extra Example 3: Solving Percent Problems23:44

27m 9s

- Intro0:00
- Simple Interest0:05
- Principal0:06
- Interest & Interest Rate0:41
- Simple Interest1:43
- Simple Interest Formula2:23
- Simple Interest Formula: I = prt2:24
- Extra Example 1: Finding Simple Interest3:53
- Extra Example 2: Finding Simple Interest8:08
- Extra Example 3: Finding Simple Interest12:02
- Extra Example 4: Finding Simple Interest17:46

17m 15s

- Intro0:00
- Discount0:19
- Discount0:20
- Sale Price1:22
- Sales Tax2:24
- Sales Tax2:25
- Total Due2:59
- Extra Example 1: Finding the Discount3:43
- Extra Example 2: Finding the Sale Price6:28
- Extra Example 3: Finding the Sale Tax11:14
- Extra Example 4: Finding the Total Due14:08

24m 17s

- Intro0:00
- Intersecting Lines0:07
- Properties of Lines0:08
- When Two Lines Cross Each Other1:55
- Angles2:56
- Properties of Angles: Sides, Vertex, and Measure2:57
- Classifying Angles7:18
- Acute Angle7:19
- Right Angle7:54
- Obtuse Angle8:03
- Angle Relationships8:56
- Vertical Angles8:57
- Adjacent Angles10:38
- Complementary Angles11:52
- Supplementary Angles12:54
- Extra Example 1: Lines16:00
- Extra Example 2: Angles18:22
- Extra Example 3: Angle Relationships20:05
- Extra Example 4: Name the Measure of Angles21:11

13m 35s

- Intro0:00
- Angles of a Triangle0:05
- All Triangles Have Three Angles0:06
- Measure of Angles2:16
- Extra Example 1: Find the Missing Angle Measure5:39
- Extra Example 2: Angles of a Triangle7:18
- Extra Example 3: Angles of a Triangle9:24

15m 10s

- Intro0:00
- Types of Triangles by Angles0:05
- Acute Triangle0:06
- Right Triangle1:14
- Obtuse Triangle2:22
- Classifying Triangles by Sides4:18
- Equilateral Triangle4:20
- Isosceles Triangle5:21
- Scalene Triangle5:53
- Extra Example 1: Classify the Triangle by Its Angles and Sides6:34
- Extra Example 2: Sketch the Figures8:10
- Extra Example 3: Classify the Triangle by Its Angles and Sides9:55
- Extra Example 4: Classify the Triangle by Its Angles and Sides11:35

17m 41s

- Intro0:00
- Quadrilaterals0:05
- Definition of Quadrilaterals0:06
- Parallelogram0:45
- Rectangle2:28
- Rhombus3:13
- Square3:53
- Trapezoid4:38
- Parallelograms5:33
- Parallelogram, Rectangle, Rhombus, Trapezoid, and Square5:35
- Extra Example 1: Give the Most Exact Name for the Figure11:37
- Extra Example 2: Fill in the Blanks13:31
- Extra Example 3: Complete Each Statement with Always, Sometimes, or Never14:37

12m 44s

- Intro0:00
- Area0:06
- Definition of Area0:07
- Area of a Parallelogram2:00
- Area of a Parallelogram2:01
- Extra Example 1: Find the Area of the Rectangle4:30
- Extra Example 2: Find the Area of the Parallelogram5:29
- Extra Example 3: Find the Area of the Parallelogram7:22
- Extra Example 4: Find the Area of the Shaded Region8:55

11m 29s

- Intro0:00
- Area of a Triangle0:05
- Area of a Triangle: Equation and Example0:06
- Extra Example 1: Find the Area of the Triangles1:31
- Extra Example 2: Find the Area of the Figure4:09
- Extra Example 3: Find the Area of the Shaded Region7:45

15m 4s

- Intro0:00
- Segments in Circles0:05
- Radius0:06
- Diameter1:08
- Chord1:49
- Circumference2:53
- Circumference of a Circle2:54
- Extra Example 1: Name the Given Parts of the Circle6:26
- Extra Example 2: Find the Circumference of the Circle7:54
- Extra Example 3: Find the Circumference of Each Circle with the Given Measure11:04

14m 43s

- Intro0:00
- Area of a Circle0:05
- Area of a Circle: Equation and Example0:06
- Extra Example 1: Find the Area of the Circle2:17
- Extra Example 2: Find the Area of the Circle5:47
- Extra Example 3: Find the Area of the Shaded Region9:24

21m 49s

- Intro0:00
- Prisms0:06
- Polyhedron0:07
- Regular Prism, Bases, and Lateral Faces1:44
- Cylinders9:37
- Bases and Altitude9:38
- Extra Example 1: Classify Each Prism by the Shape of Its Bases11:16
- Extra Example 2: Name Two Different Edges, Faces, and Vertices of the Prism15:44
- Extra Example 3: Name the Solid of Each Object17:58
- Extra Example 4: Write True or False for Each Statement19:47

8m 59s

- Intro0:00
- Volume of a Rectangular Prism0:06
- Volume of a Rectangular Prism: Formula0:07
- Volume of a Rectangular Prism: Example1:46
- Extra Example 1: Find the Volume of the Rectangular Prism3:39
- Extra Example 2: Find the Volume of the Cube5:00
- Extra Example 3: Find the Volume of the Solid5:56

16m 15s

- Intro0:00
- Volume of a Triangular Prism0:06
- Volume of a Triangular Prism: Formula0:07
- Extra Example 1: Find the Volume of the Triangular Prism2:42
- Extra Example 2: Find the Volume of the Triangular Prism7:21
- Extra Example 3: Find the Volume of the Solid10:38

15m 55s

- Intro0:00
- Volume of a Cylinder0:05
- Volume of a Cylinder: Formula0:06
- Extra Example 1: Find the Volume of the Cylinder1:52
- Extra Example 2: Find the Volume of the Cylinder7:38
- Extra Example 3: Find the Volume of the Cylinder11:25

23m 28s

- Intro0:00
- Surface Area of a Prism0:06
- Surface Area of a Prism0:07
- Lateral Area of a Prism2:12
- Lateral Area of a Prism2:13
- Extra Example 1: Find the Surface Area of the Rectangular Prism7:08
- Extra Example 2: Find the Lateral Area and the Surface Area of the Cube12:05
- Extra Example 3: Find the Surface Area of the Triangular Prism17:13

27m 41s

- Intro0:00
- Surface Area of a Cylinder0:06
- Introduction to Surface Area of a Cylinder0:07
- Surface Area of a Cylinder1:33
- Formula1:34
- Extra Example 1: Find the Surface Area of the Cylinder5:51
- Extra Example 2: Find the Surface Area of the Cylinder13:51
- Extra Example 3: Find the Surface Area of the Cylinder20:57

24m 32s

- Intro0:00
- Measures of Central Tendency0:06
- Mean1:17
- Median2:42
- Mode5:41
- Extra Example 1: Find the Mean, Median, and Mode for the Following Set of Data6:24
- Extra Example 2: Find the Mean, Median, and Mode for the Following Set of Data11:14
- Extra Example 3: Find the Mean, Median, and Mode for the Following Set of Data15:13
- Extra Example 4: Find the Three Measures of the Central Tendency19:12

19m 43s

- Intro0:00
- Histograms0:05
- Definition and Example0:06
- Extra Example 1: Draw a Histogram for the Frequency Table6:14
- Extra Example 2: Create a Histogram of the Data8:48
- Extra Example 3: Create a Histogram of the Following Test Scores14:17

17m 54s

- Intro0:00
- Box-and-Whisker Plot0:05
- Median, Lower & Upper Quartile, Lower & Upper Extreme0:06
- Extra Example 1: Name the Median, Lower & Upper Quartile, Lower & Upper Extreme6:04
- Extra Example 2: Draw a Box-and-Whisker Plot Given the Information7:35
- Extra Example 3: Find the Median, Lower & Upper Quartile, Lower & Upper Extreme9:31
- Extra Example 4: Draw a Box-and-Whiskers Plots for the Set of Data12:50

17m 42s

- Intro0:00
- Stem-and-Leaf Plots0:05
- Stem-and-Leaf Plots0:06
- Extra Example 1: Use the Data to Create a Stem-and-Leaf Plot2:28
- Extra Example 2: List All the Numbers in the Stem-and-Leaf Plot in Order From Least to Greatest7:02
- Extra Example 3: Create a Stem-and-Leaf Plot of the Data & Find the Median and the Mode.8:59

19m 59s

- Intro0:00
- The Coordinate System0:05
- The Coordinate Plane0:06
- Quadrants, Origin, and Ordered Pair0:50
- The Coordinate Plane7:02
- Write the Coordinates for Points A, B, and C7:03
- Extra Example 1: Graph Each Point on the Coordinate Plane9:03
- Extra Example 2: Write the Coordinate and Quadrant for Each Point11:05
- Extra Example 3: Name Two Points From Each of the Four Quadrants13:13
- Extra Example 4: Graph Each Point on the Same Coordinate Plane17:47

15m 35s

- Intro0:00
- Compound Events0:08
- Compound Events0:09
- Fundamental Counting Principle3:35
- Extra Example 1: Create a List of All the Possible Outcomes4:47
- Extra Example 2: Create a Tree Diagram For All the Possible Outcomes6:34
- Extra Example 3: Create a Tree Diagram For All the Possible Outcomes10:00
- Extra Example 4: Fundamental Counting Principle12:41

35m 19s

- Intro0:00
- Independent Events0:11
- Definition0:12
- Example 1: Independent Event1:45
- Example 2: Two Independent Events4:48
- Dependent Events9:09
- Definition9:10
- Example: Dependent Events10:10
- Extra Example 1: Determine If the Two Events are Independent or Dependent Events13:38
- Extra Example 2: Find the Probability of Each Pair of Events18:11
- Extra Example 3: Use the Spinner to Find Each Probability21:42
- Extra Example 4: Find the Probability of Each Pair of Events25:49

12m 13s

- Intro0:00
- Disjoint Events0:06
- Definition and Example0:07
- Extra Example 1: Disjoint & Not Disjoint Events3:08
- Extra Example 2: Disjoint & Not Disjoint Events4:23
- Extra Example 3: Independent, Dependent, and Disjoint Events6:30

20m 5s

- Intro0:00
- Event Not Occurring0:07
- Formula and Example0:08
- Extra Example 1: Use the Spinner to Find Each Probability7:24
- Extra Example 2: Probability of Event Not Occurring11:21
- Extra Example 3: Probability of Event Not Occurring15:51

For more information, please see full course syllabus of Basic Math

0 answers

Post by Zoe Chen on April 24 at 09:59:40 AM

its easy

1 answer

Last reply by: Zoe Chen

Fri Apr 24, 2020 9:45 AM

Post by Ada Liew on January 14, 2019

Is gcf the opposite of lcm (least common factor) ????

0 answers

Post by Raymond Wong on October 10, 2018

That lesson was so good

1 answer

Last reply by: Emil Poulsen

Sat Feb 11, 2017 10:48 AM

Post by Karina Herrera on December 28, 2016

For the example asking to find the GCF of 6 & 18, using the 2nd method, I used 3 instead of 2 as a common factor for the numbers but still got the same answer. Did I just get lucky, or have I missed something?

Thank you for the lessons by the way. They are very helpful. :)

3 answers

Last reply by: Ada Liew

Mon Jan 14, 2019 9:41 PM

Post by Dante Danis on December 1, 2014

Super easy and simple. I loved the second method. Thank you again.

0 answers

Post by Milan Ray on April 16, 2014

your voice is hazy ????

0 answers

Post by Milan Ray on April 16, 2014

Another factor of 30 and15 is 3

1 answer

Last reply by: Mary Pyo

Thu Aug 2, 2012 10:37 PM

Post by Joseph Craft on July 26, 2012

Will you always have a common factor? What would be the common factor between 123 and 56

0 answers

Post by jimmy getachew on May 18, 2012

God bless you. I am a home schooling parent and you are making my life easy.

1 answer

Last reply by: Rocio Jackson

Thu Oct 4, 2012 11:55 PM

Post by David Nelson on March 21, 2012

Note: 3 is not the greatest common factor of 15 and 30

1 answer

Last reply by: faisal madar

Tue Nov 12, 2013 5:23 PM

Post by Angel Pina on February 11, 2012

What's the best way to find those numbers if I use method 1?

3 answers

Last reply by: carreola arreola

Tue Jul 24, 2012 2:55 PM

Post by judy lee on August 17, 2011

Isn't 3 a common factor of 15 and 30?