Year 1 Ten More, Ten Less (and One More, One Less) Worksheet — Getting Started — Practice Set 4 — 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 4 — Answers
Use place value: ten more or ten less changes the tens digit.
1.One more than 17 is (answer space).
Answer: 18
- 17 + 1 = 18
2.One less than 8 is (answer space).
Answer: 7
- 8 − 1 = 7
3.One more than 14 is (answer space).
Answer: 15
- 14 + 1 = 15
4.One more than 4 is (answer space).
Answer: 5
- 4 + 1 = 5
5.One less than 14 is (answer space).
Answer: 13
- 14 − 1 = 13
6.One more than 3 is (answer space).
Answer: 4
- 3 + 1 = 4
7.One more than 8 is (answer space).
Answer: 9
- 8 + 1 = 9
8.One more than 6 is (answer space).
Answer: 7
- 6 + 1 = 7
9.One less than 20 is (answer space).
Answer: 19
- 20 − 1 = 19
10.One less than 17 is (answer space).
Answer: 16
- 17 − 1 = 16
11.One less than 3 is (answer space).
Answer: 2
- 3 − 1 = 2
12.One more than 10 is (answer space).
Answer: 11
- 10 + 1 = 11
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.