Is the Integer Answer Reasonable? - Practice Estimation for Integer Equations

Sep 30, 2026

Uploaded by Grenda

Estimation-based worksheet tasks students with deciding whether computed answers to integer expressions are reasonable. It provides 16 problems involving addition and subtraction of positive and negative integers, each followed by a result. Students evaluate reasonableness rather than exact calculation, using benchmarks and mental estimation to judge whether each proposed answer fits the magnitude and sign implied by the numbers.

LanguageEnglish

CategoryExam

FormatPDF

Pages3

Reading Time8 min

AccessFree to download

Use Estimation to Judge Answers

Problems 1–10

Problems 11–16

Answer Key

Is the Integer Answer Reasonable? Name: | Use estimation to decide whether each answer is reasonable.
1) 45 − (-79) = -124 2) -633 + (-509) = -1,142
3) -311 − (-441) = -130 4) -302 + 486 = 184
5) -32 + 18 = -14 6) -46 − 87 = 133
7) -325 − (-423) = 98 8) -70 + 78 = -148
9) -268 − 403 = -671 10) 472 + (-854) = 382
11) -348 + (-880) = 1,228 12) 593 − (-173) = 766
13) 26 + (-35) = 61 14) 61 − (-59) = 120
15) -49 + (-37) = -86 16) -70 − 19 = 89 | 1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16. | Answers | | --- | --- | --- | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Math [www.CommonCoreSheets.com](www.CommonCoreSheets.com) 6 1-10 11-16 | 94 | 88 | 81 | 75 | 69 | 63 | 56 | 50 | 44 | 38 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 31 | 25 | 19 | 13 | 6 | 0 | | | | | Is the Integer Answer Reasonable? Name: Answer Key | Use estimation to decide whether each answer is reasonable. | | | | | | | | Answers | | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1)
3)
5) | 45 − (-79) = -124
-311 − (-441) = -130
-32 + 18 = -14 | 2) -633 + (-509) = -1,142
4) -302 + 486 = 184
6) -46 − 87 = 133 | | | | | | [1. ](1. no)[ no](1. no)
[2](2). yes
[3. ](3. no)[ no](3. no)
[4](4). yes
5. yes | | | | | | | | 7)
9) | -325 − (-423) = 98
-268 − 403 = -671 | 8) -70 + 78 = -148
10) 472 + (-854) = 382 | | | | | | [6. ](6. no)[ no](6. no)
[7](7). yes
[8. ](8. no)[ no](8. no)
[9](9). yes
[10. ](10. no)[ no](10. no) | | | | | | | | 11)
13)
15) | -348 + (-880) = 1,228 12) 593 − (-173) = 766
26 + (-35) = 61 14) 61 − (-59) = 120
-49 + (-37) = -86 16) -70 − 19 = 89 | | | | | | | [11. ](11. no)[ no](11. no)
[12](12). yes
[13. ](13. no)[ no](13. no)
[14](14). yes
15. yes
[16. ](16. no)[ no](16. no) | | | | | | | | | [Math](Math www.CommonCoreSheets.com 6)[ www.CommonCoreSheets.com](Math www.CommonCoreSheets.com 6)[ 6](Math www.CommonCoreSheets.com 6) | | 1-10
11-16 | 94 | 88 | 81 | 75 | | 69 | 63 | 56 | 50 | 44 | 38 | | | | | | 31 | 25 | 19 | 13 | | 6 | 0 | | | | | Is the Integer Answer Reasonable? Name: | Use estimation to decide whether each answer is reasonable.
1) 45 − (-79) = -124 2) -633 + (-509) = -1,142
3) -311 − (-441) = -130 4) -302 + 486 = 184
5) -32 + 18 = -14 6) -46 − 87 = 133
7) -325 − (-423) = 98 8) -70 + 78 = -148
9) -268 − 403 = -671 10) 472 + (-854) = 382 | | | | | | | | Answers
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12. | | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 11) -348 + (-880) = 1,228 12) 593 − (-173) = 766 | | | | | | | | | | | | | | |
Math | Modified
[www.CommonCoreSheets.com](www.CommonCoreSheets.com) | 6 | 1-10
11-12 | 92 | 83 | 75 | 67 | 58 | 50 | 42 | 33 | 25 | 17 | | | | | | 8 | 0 | | | | | | | | |

FAQs

What skill does this worksheet practice?

It practices using estimation to determine whether each answer to an integer expression is reasonable.

How are the problems structured?

Each item gives an integer subtraction or addition expression and a computed result, and you decide if that result makes sense.

Is an exact calculation required for every problem?

No. The focus is on estimating to judge reasonableness, not computing the result from scratch in every case.

Sep 30, 2026

Uploaded by Grenda