Year 2 Mental Addition and Subtraction Strategies Worksheet — Level 2 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 2 addition worksheet.
Success TutoringWorksheetsAnswer sheetYear 2 · Mathematics · AdditionYear 2 Mental Addition and Subtraction Strategies Worksheet — Level 2 — Practice Set 2 — Answers
Fill in each step of the strategy, then write the answer.
1.56 + 5 = 56 + 4 + (answer space) = (answer space)
Answer: 1, 61
- 56 + 4 = 60 (a ten)
- 60 + 1 = 61
2.76 + 9 = 76 + 10 − (answer space) = (answer space)
Answer: 1, 85
- 76 + 10 = 86
- 86 − 1 = 85
3.11 + 12 = (answer space) + (answer space) + 1 = (answer space)
Answer: 11, 11, 23
- Double 11 is 22
- 22 + 1 = 23
4.27 + 6 = 27 + 3 + (answer space) = (answer space)
Answer: 3, 33
- 27 + 3 = 30 (a ten)
- 30 + 3 = 33
5.28 + 9 = 28 + 10 − (answer space) = (answer space)
Answer: 1, 37
- 28 + 10 = 38
- 38 − 1 = 37
6.43 + 42 = (answer space) + (answer space) + 1 = (answer space)
Answer: 42, 42, 85
- Double 42 is 84
- 84 + 1 = 85
7.55 + 9 = 55 + 5 + (answer space) = (answer space)
Answer: 4, 64
- 55 + 5 = 60 (a ten)
- 60 + 4 = 64
8.11 + 9 = 11 + 10 − (answer space) = (answer space)
Answer: 1, 20
- 11 + 10 = 21
- 21 − 1 = 20
9.74 + 73 = (answer space) + (answer space) + 1 = (answer space)
Answer: 73, 73, 147
- Double 73 is 146
- 146 + 1 = 147
10.56 + 8 = 56 + 4 + (answer space) = (answer space)
Answer: 4, 64
- 56 + 4 = 60 (a ten)
- 60 + 4 = 64
11.38 + 9 = 38 + 10 − (answer space) = (answer space)
Answer: 1, 47
- 38 + 10 = 48
- 48 − 1 = 47
12.28 + 27 = (answer space) + (answer space) + 1 = (answer space)
Answer: 27, 27, 55
- Double 27 is 54
- 54 + 1 = 55
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
- For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
- Celebrate what went well first, then pick one thing to work on next.