Year 1 Ten More, Ten Less (and One More, One Less) Worksheet — Getting Started — 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 — Answers
Use place value: ten more or ten less changes the tens digit.
1.One more than 12 is (answer space).
Answer: 13
- 12 + 1 = 13
2.One less than 17 is (answer space).
Answer: 16
- 17 − 1 = 16
3.One more than 17 is (answer space).
Answer: 18
- 17 + 1 = 18
4.One more than 5 is (answer space).
Answer: 6
- 5 + 1 = 6
5.One less than 8 is (answer space).
Answer: 7
- 8 − 1 = 7
6.One more than 9 is (answer space).
Answer: 10
- 9 + 1 = 10
7.One less than 12 is (answer space).
Answer: 11
- 12 − 1 = 11
8.One more than 7 is (answer space).
Answer: 8
- 7 + 1 = 8
9.One less than 18 is (answer space).
Answer: 17
- 18 − 1 = 17
10.One more than 0 is (answer space).
Answer: 1
- 0 + 1 = 1
11.One less than 6 is (answer space).
Answer: 5
- 6 − 1 = 5
12.One less than 9 is (answer space).
Answer: 8
- 9 − 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.