Grade 2 · Math · Challenge
Free Addition Within 100 worksheet - version 9
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-XBHTBA-7SAY
1.
28 + 9 =
2.
12 + 19 =
3.
34 + 58 =
4.
40 + 28 =
5.
53 + 20 =
6.
8 + 92 =
7.
35 + 65 =
8.
6 + 20 =
9.
23 + 77 =
10.
76 + 24 =
11.
47 + 53 =
12.
17 + 73 =
13.
25 + 7 =
14.
80 + 20 =
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 9
- 28 + 9 =37
- 12 + 19 =31
- 34 + 58 =92
- 40 + 28 =68
- 53 + 20 =73
- 8 + 92 =100
- 35 + 65 =100
- 6 + 20 =26
- 23 + 77 =100
- 76 + 24 =100
- 47 + 53 =100
- 17 + 73 =90
- 25 + 7 =32
- 80 + 20 =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.