Year 1 Ten More, Ten Less (and One More, One Less) Worksheet — Level 1 — Answers
Answer sheet with worked solutions for the Year 1 place value worksheet.
Success TutoringWorksheetsAnswer sheetYear 1 · Mathematics · Place ValueYear 1 Ten More, Ten Less (and One More, One Less) Worksheet — Level 1 — Answers
Use place value: ten more or ten less changes the tens digit.
1.One more than 55 is (answer space).
Answer: 56
- 55 + 1 = 56
2.Ten less than 78 is (answer space).
Answer: 68
- 78 − 10 = 68
3.One less than 80 is (answer space).
Answer: 79
- 80 − 1 = 79
4.Ten more than 54 is (answer space).
Answer: 64
- 54 + 10 = 64
5.One more than 16 is (answer space).
Answer: 17
- 16 + 1 = 17
6.Ten less than 90 is (answer space).
Answer: 80
- 90 − 10 = 80
7.One more than 84 is (answer space).
Answer: 85
- 84 + 1 = 85
8.Ten more than 71 is (answer space).
Answer: 81
- 71 + 10 = 81
9.One more than 18 is (answer space).
Answer: 19
- 18 + 1 = 19
10.One less than 69 is (answer space).
Answer: 68
- 69 − 1 = 68
11.One more than 28 is (answer space).
Answer: 29
- 28 + 1 = 29
12.One less than 64 is (answer space).
Answer: 63
- 64 − 1 = 63
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.