5th Grade Math
Order of Operations and Whole Numbers
Unit 1
Practice Post!
Try out these practice problems to review Unit 1!
Question 1: Add 8 and 7, then multiply by 2
(8 + 7) x 2. We first have to add 8 and 7 and then multiply by 2, but addition comes after multiplication in order of operations (remember PEMDAS?), so we must put 8 + 7 in parentheses to show that we solve that step first. 15 x 2 = 30
Question 2: Describe how the expression 7(10 x 10) relates to 10 x 10.
The expression 7(10 x 10) is 7 times larger than the expression 10 x 10 since I know that I that 7(10 x 10) means that I have 7 groups of (10 x 10).
Question 3: What is 187 x 54?
It is 10098! The work for this is shown at the bottom of the page, only look at it to check your answer!
Observation Station
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Chapter Challenge
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Feelings Forward
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Play-palooza
Ready to have fun with these practice games?
Click on the picture to play a game to practice multiplying whole numbers with powers of 10!
This is the work for practice Question 3! How did you do?