Grade 2 · Math · Building Confidence
Free Addition Within 100 worksheet - version 3
Add one- and two-digit numbers with sums up to 100. This printable version includes 14 grade-appropriate questions and a separate answer sheet.
Addition Within 100
Grade 2 · Building confidence · 14 questions · Version PG-JRWKKM-1DIA
1.31 + 69 =
2.99 + 1 =
3.70 + 1 =
4.79 + 21 =
5.41 + 56 =
6.53 + 20 =
7.70 + 30 =
8.37 + 20 =
9.17 + 31 =
10.73 + 27 =
11.5 + 75 =
12.33 + 67 =
13.57 + 43 =
14.12 + 61 =
Answers and teaching notes
Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.
Show answers for version 3
- 31 + 69 =100
- 99 + 1 =100
- 70 + 1 =71
- 79 + 21 =100
- 41 + 56 =97
- 53 + 20 =73
- 70 + 30 =100
- 37 + 20 =57
- 17 + 31 =48
- 73 + 27 =100
- 5 + 75 =80
- 33 + 67 =100
- 57 + 43 =100
- 12 + 61 =73
Worked example
38 + 24 = 62. Add ones: 8 + 4 = 12, regroup 1 ten, then add tens.
Common mistake
Forgetting to add the regrouped ten.
Helpful hint
Line up ones with ones and tens with tens.