3 answersLast reply by: Arpana DuggalMon Jul 9, 2012 6:15 PMPost by richard zavala on October 7, 2011I was wathching numerical experssion and about the middel of the vidioe it would restaret,can you tell me what i can do so that i can watch it all the way through. 0 answersPost by Robert Donnelly on March 5, 2012The babysitting word problem is worded so that you don't actually state that the friend gets paid by the hour that's just an assumption. If you read what you wrote its not stating that at all its actually stating this: (\$6.5*5)+\$5.25 0 answersPost by Meoung-Jin Lim on May 21, 2012That kind of explained something . . . the bad part of the video was when she kept doing examples, I was like, I know this already! all the time, she should have explained something else too. 4 answersLast reply by: Professor Fung Sat Dec 1, 2012 3:45 AMPost by Jonathan Taylor on May 22, 2012Mrs Fung I have question any example on writing and expression as a fraction 3+4/5+6 0 answersPost by RICHARD OGBONNA on January 13 at 01:34:38 PMAll instructions within the reach of an average student. Thank you Mrs. Fung.

### Numerical Expressions

• Mathematicians have agreed upon a convention for performing arithmetic operations, called the order of operations, so that any mathematical expression will always have the same value.
• Order of Operations
1. Parentheses (work inside grouping symbols)
2. Exponents
3. Multiply and Divide in order from left to right
4. Add and Subtract in order from left to right

## 18 ×3 − 49 ÷7 ×3 =

• 54 − 49 ÷7 ×3 =
• 54 − 7 ×3 =
• 54 − 21 =

## 44 ÷(16 − 12) + 7 ×5 =

• 44 ÷4 + 7 ×5 =
• 11 + 35 =

## (14 − 7) + 72 ÷9 − (8 + 3) =

• 7 + 72 ÷9 − (8 + 3) =
• 7 + 8 − (8 + 3) =
• 7 + 8 − 11 =
• 15 − 11 =

## 7.4 + ((57.7 − 41.5) − 9.1) =

• 7.4 + (16.2 − 9.1) =
• 7.4 + 7.1 =

## 2(5 + (27.4 − 6 − (15.4 − 2.5))) =

• 2(5 + (27.4 − 6 − 12.9)) =
• 2(5 + (21.4 − 12.9)) =
• 2(5 + 8.5) =
• 2(13.5) =

## ((11 ×2 + 3) ÷5 ×2 + 10) ÷4 =

• ((22 + 3) ÷5 ×2 + 10) ÷4
• (25 ÷5 ×2 + 10) ÷4 =
• (5 ×2 + 10) ÷4 =
• (10 + 10) ÷4 =
• 20 ÷4 =

## ((17 + 5 ×2) ÷3 − 1) ÷4 =

• ((17 + 10) ÷3 − 1) ÷4 =
• (27 ÷3 − 1) ÷4 =
• (9 − 1) ÷4 =
• 8 ÷4 =

## While shopping for school, you buy two notebooks for \$ 4.25 each, three pens for \$ 1.50 each, and 5 pencils for \$ 0.75 each. How much money did you spend total?

• 2(\$ 4.25) + 3(\$ 1.50) + 5(\$ 0.75) =
• \$ 8.50 + \$ 4.50 + \$ 3.75 =
• \$ 13.00 + \$ 3.75 =

## A family with 3 children, 2 adults, and 1 senior citizen purchase tickets for a movie. A child ticket costs \$ 7, an adult ticket costs \$ 10.50, and a senior ticket costs \$ 8. What is the total cost of their tickets?

• 3(\$ 7) + 2(\$ 10.50) + \$ 8 =
• \$ 21 + \$ 21 + \$ 8 =
• \$ 42 + \$ 8 =

## Michelle is shopping for groceries. She buys 2 apples for \$ 1.50 each, 6 bananas for \$ 0.75 each, 10 strawberries for \$ 0.25 each, and 1 pineapple for \$ 5. How much did Michelle spend on groceries?

• 2(\$ 1.50) + 6(\$ 0.75) + 10(\$ 0.25) + \$ 5 =
• \$ 3 + \$ 4.50 + \$ 2.50 + \$ 5 =
• \$ 7.50 + \$ 2.50 + \$ 5 =
• \$ 10 + \$ 5 =

### \$ 15

*These practice questions are only helpful when you work on them offline on a piece of paper and then use the solution steps function to check your answer.