Grade 2 · Math · Challenge
Free Addition Within 100 worksheet - version 7
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 · Stretch challenge · 14 questions · Version PG-103DU90-7SAY
1.
28 + 72 =
2.
36 + 5 =
3.
58 + 23 =
4.
90 + 10 =
5.
82 + 3 =
6.
89 + 11 =
7.
2 + 86 =
8.
38 + 62 =
9.
61 + 39 =
10.
87 + 13 =
11.
95 + 5 =
12.
23 + 74 =
13.
63 + 21 =
14.
72 + 22 =
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 7
- 28 + 72 =100
- 36 + 5 =41
- 58 + 23 =81
- 90 + 10 =100
- 82 + 3 =85
- 89 + 11 =100
- 2 + 86 =88
- 38 + 62 =100
- 61 + 39 =100
- 87 + 13 =100
- 95 + 5 =100
- 23 + 74 =97
- 63 + 21 =84
- 72 + 22 =94
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.