Compatible Numbers Worksheet
A worksheet for 6th graders to practice estimating sums, differences, products, and quotients using compatible numbers.
Includes
Standards
Topics
Compatible Numbers Practice
Name:
Date:
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Read each question carefully and use compatible numbers to estimate the answer. Show your work.
Estimate each sum or difference using compatible numbers.
1. 48 + 73 ≈
2. 121 - 59 ≈
3. 389 + 512 ≈
4. 603 - 297 ≈
Choose the best estimate for each product using compatible numbers.
5. 23 × 18 ≈ ?
400
500
600
700
6. 49 × 9 ≈ ?
400
450
500
550
Estimate each quotient using compatible numbers.
7. 158 ÷ 4
8. 297 ÷ 5
9. 543 ÷ 9
Determine if the following statements are true or false.
10. To estimate 312 + 489, you can use 300 + 500.
True
False
11. Compatible numbers are always rounded to the nearest ten.
True
False
Solve the following word problems using compatible numbers.
12. A baker made 147 cookies and wants to put them into boxes that hold 12 cookies each. About how many boxes will she need?
13. Sarah is reading a book with 287 pages. She has read 103 pages so far. About how many pages does she have left to read?
Here is a number line to help visualize compatible numbers for estimation. If you were estimating 78 + 23, you might use 80 + 20 = 100.
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