Grade 2 · Math · Challenge
Free Addition Within 100 worksheet - version 4
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-10XCNBX-7SAY
1.
42 + 36 =
2.
41 + 59 =
3.
57 + 43 =
4.
97 + 3 =
5.
37 + 58 =
6.
79 + 21 =
7.
74 + 26 =
8.
51 + 46 =
9.
35 + 65 =
10.
5 + 6 =
11.
55 + 45 =
12.
65 + 35 =
13.
39 + 61 =
14.
17 + 83 =
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 4
- 42 + 36 =78
- 41 + 59 =100
- 57 + 43 =100
- 97 + 3 =100
- 37 + 58 =95
- 79 + 21 =100
- 74 + 26 =100
- 51 + 46 =97
- 35 + 65 =100
- 5 + 6 =11
- 55 + 45 =100
- 65 + 35 =100
- 39 + 61 =100
- 17 + 83 =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.