Compatible Numbers Worksheet
A Grade 5 Math worksheet focusing on understanding and applying compatible numbers for estimation in addition, subtraction, multiplication, and division.
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Standards
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Compatible Numbers
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Read each question carefully and follow the instructions. Compatible numbers are numbers that are easy to compute mentally.
1. Compatible numbers are numbers that are easy to compute .
2. When we use compatible numbers, we are usually trying to an answer.
3. For addition and subtraction, compatible numbers often end in .
4. For division, compatible numbers are often numbers that are easy to .
5. Which pair of numbers are compatible for estimating the sum of 48 + 73?
40 and 70
50 and 70
50 and 80
40 and 80
6. Estimate the product of 23 x 96 using compatible numbers. Show your work.
7. 180 and 6 are compatible numbers for division.
True
False
8. Sarah wants to buy 4 books that cost $12.75 each. Approximately how much money does she need? Use compatible numbers to estimate.
9. Use the number line below to help you find compatible numbers for estimating 380 ÷ 42.
Compatible numbers to use: and
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