1. Module 2: Multi-digit Whole Number and Decimal Operations
Mid-Module Review
Jeopardy
Mental Math & Estimation
Numerical Expressions
Multiply Whole Numbers
Multiply Decimals
Convert Measurements
5th Grade Math

2. This review will focus on the following 5th grade Common Core Math Standards
Write and interpret numerical expressions.
5.OA.1 Use parentheses, brackets, or braces in numerical expressions, and evaluate expressions with these symbols.
5.OA.2 Write simple expressions that record calculations with numbers, and interpret numerical expressions without evaluating them. For example, express the calculation “add 8 and 7, then multiply by 2” as 2 × (8 + 7). Recognize that 3 × ( ) is three times as large as , without having to calculate the indicated sum or product.
Understand the place value system.
5.NBT.1 Recognize that in a multi-digit number, a digit in one place represents 10 times as much as it represents in the place to its right and 1/10 of what it represents in the place to its left.
5.NBT.2 Explain patterns in the number of zeros of the product when multiplying a number by powers of 10, and explain patterns in the placement of the decimal point when a decimal is multiplied or divided by a power of 10. Use whole-number exponents to denote power of 10.
Perform operations with multi-digit whole numbers and with decimals to hundredths.
5.NBT.5 Fluently multiply multi-digit whole numbers using the standard algorithm.
5.NBT.7 Multiply decimals to hundredths, using concrete models or drawings and strategies based on place value, properties of operations.
Convert like measurement units within a given measurement system.
5.MD.1 Convert among different-sized standard measurement units within a given measurement system (e.g., convert 5 cm to 0.05 m), and use these conversions in solving multi-step, real world problems.

3. Mental Math / Estimation Numerical Expressions Multiply Whole Numbers
Multiply Decimals
Convert Measurements
100
200
300
400
500
*T-B*

4. Mental Math / Estimation 100
Multiply. Use Mental Math.
72 x 100
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5. Mental Math / Estimation 200
Multiply. Use Mental Math.
400 x 50
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6. Mental Math / Estimation 300
Multiply. Use properties and mental math.
37 x 5 x 2
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7. Mental Math / Estimation 400
Round the factors and estimate the product.
49 x 610
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8. Mental Math / Estimation 500
Use estimation and your knowledge of rounding to compare using <, >.
231 x ,000
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9. Numerical Expressions 100
Write an expression to match the words, then solve.
4 times the sum of 8 and 4
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10. Numerical Expressions 200
Write an expression to match the words, then solve. the difference of 20 and 10 tripled
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11. Numerical Expressions 300
Write an expression to match the words, then solve. the sum of 4 eights and 3 nines
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12. Numerical Expressions 400
Write an expression to match the words, then solve. take 7 from the quotient of 40 and 5
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13. Numerical Expressions 500
Write the expression in words.
(12 + 8) x 10
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14. Multiply Whole Numbers 100
Find the product.
47 x 63
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15. Multiply Whole Numbers 200
Find the product.
509 x 26
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16. Multiply Whole Numbers 300
Find the product. Draw an area model.
625 x 81
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17. Multiply Whole Numbers 400
Find the product. Draw an area model.
742 x 96
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18. Multiply Whole Numbers 500
Find the product. Use estimation
to check.
1,147 x 89
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19. Multiply Decimals 100
Find the product.
4 x 0.22
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20. Multiply Decimals 200
Find the product. 15 x 1.78
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21. Multiply Decimals 300
The cost per pound for a turkey is $1.29. If Ms. Wilson wants to purchase a turkey that weighs 26 pounds, how much money will she need?
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22. Multiply Decimals 400
A principal ordered 33 iPads for the school. If each iPad costs $449.75, what is the total cost of the iPads?
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23. Find the product. How do you know your answer is reasonable?
Multiply Decimals 500
Find the product. How do you know your answer is reasonable?
64 x 0.53
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24. Convert Measurements 100
Convert. 34 L = mL
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25. Convert Measurements 200
Convert. 7.1 kg = g
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26. Convert Measurements 300
Convert.
qt = 12.5 g
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27. Convert Measurements 400
Convert. lbs = 5.2 tons
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28. Convert Measurements Tie Breaker
Convert. 5.6 miles = inches
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29. Mental Math / Estimation Numerical Expressions Multiply Whole Numbers
Answer Key
Mental Math / Estimation
Numerical Expressions
Multiply Whole Numbers
Multiply Decimals
Convert Measurements
7,200
4 x (8 + 4)
= 48
2,961
0.88
34,000 mL
20,000
(20 – 10) x 3
= 30
13,234
26.7
7,100 g
370
(4 x 8) + (3 x 9)
= 59
50,625
$33.54
50 qt
30,000
(40 ÷ 5) - 7
= 1
71,232
$14,841.75
10,400 lbs
>
the sum of 12 and 8 times 10
102,083
33.92
0.5 is half and half of 64 is 32
354,816 in