Year 1 Ten More, Ten Less (and One More, One Less) Worksheet — Getting Started — Practice Set 3 — 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 — Getting Started — Practice Set 3 — Answers
Use place value: ten more or ten less changes the tens digit.
1.One less than 13 is (answer space).
Answer: 12
- 13 − 1 = 12
2.One more than 0 is (answer space).
Answer: 1
- 0 + 1 = 1
3.One less than 4 is (answer space).
Answer: 3
- 4 − 1 = 3
4.One more than 6 is (answer space).
Answer: 7
- 6 + 1 = 7
5.One less than 17 is (answer space).
Answer: 16
- 17 − 1 = 16
6.One more than 5 is (answer space).
Answer: 6
- 5 + 1 = 6
7.One less than 7 is (answer space).
Answer: 6
- 7 − 1 = 6
8.One more than 14 is (answer space).
Answer: 15
- 14 + 1 = 15
9.One more than 3 is (answer space).
Answer: 4
- 3 + 1 = 4
10.One more than 2 is (answer space).
Answer: 3
- 2 + 1 = 3
11.One less than 16 is (answer space).
Answer: 15
- 16 − 1 = 15
12.One more than 7 is (answer space).
Answer: 8
- 7 + 1 = 8
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.