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.
1.59 + 2 = 59 + 1 + (answer space) = (answer space)
Answer: 1, 61
- 59 + 1 = 60 (a ten)
- 60 + 1 = 61
2.37 + 9 = 37 + 10 − (answer space) = (answer space)
Answer: 1, 46
- 37 + 10 = 47
- 47 − 1 = 46
3.41 + 42 = (answer space) + (answer space) + 1 = (answer space)
Answer: 41, 41, 83
- Double 41 is 82
- 82 + 1 = 83
4.37 + 5 = 37 + 3 + (answer space) = (answer space)
Answer: 2, 42
- 37 + 3 = 40 (a ten)
- 40 + 2 = 42
5.47 + 9 = 47 + 10 − (answer space) = (answer space)
Answer: 1, 56
- 47 + 10 = 57
- 57 − 1 = 56
6.41 + 40 = (answer space) + (answer space) + 1 = (answer space)
Answer: 40, 40, 81
- Double 40 is 80
- 80 + 1 = 81
7.56 + 6 = 56 + 4 + (answer space) = (answer space)
Answer: 2, 62
- 56 + 4 = 60 (a ten)
- 60 + 2 = 62
8.74 + 9 = 74 + 10 − (answer space) = (answer space)
Answer: 1, 83
- 74 + 10 = 84
- 84 − 1 = 83
9.55 + 54 = (answer space) + (answer space) + 1 = (answer space)
Answer: 54, 54, 109
- Double 54 is 108
- 108 + 1 = 109
10.27 + 7 = 27 + 3 + (answer space) = (answer space)
Answer: 4, 34
- 27 + 3 = 30 (a ten)
- 30 + 4 = 34
11.88 + 9 = 88 + 10 − (answer space) = (answer space)
Answer: 1, 97
- 88 + 10 = 98
- 98 − 1 = 97
12.47 + 48 = (answer space) + (answer space) + 1 = (answer space)
Answer: 47, 47, 95
- Double 47 is 94
- 94 + 1 = 95
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.