Grade 2 · Math · Building Confidence
Free Addition Within 100 worksheet - version 12
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-H8OR06-1DIA
1.60 + 40 =
2.80 + 20 =
3.4 + 78 =
4.44 + 56 =
5.20 + 21 =
6.52 + 11 =
7.10 + 48 =
8.25 + 75 =
9.98 + 2 =
10.93 + 6 =
11.73 + 27 =
12.19 + 57 =
13.92 + 8 =
14.22 + 78 =
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 12
- 60 + 40 =100
- 80 + 20 =100
- 4 + 78 =82
- 44 + 56 =100
- 20 + 21 =41
- 52 + 11 =63
- 10 + 48 =58
- 25 + 75 =100
- 98 + 2 =100
- 93 + 6 =99
- 73 + 27 =100
- 19 + 57 =76
- 92 + 8 =100
- 22 + 78 =100
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.