Year 4 Ten More, Ten Less (and One More, One Less) Worksheet — Getting Started — Practice Set 3 — Answers
Answer sheet with worked solutions for the Year 4 place value worksheet.
Success TutoringWorksheetsAnswer sheetYear 4 · Mathematics · Place ValueYear 4 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 12 is (answer space).
Answer: 11
- 12 − 1 = 11
2.One more than 18 is (answer space).
Answer: 19
- 18 + 1 = 19
3.One less than 10 is (answer space).
Answer: 9
- 10 − 1 = 9
4.One less than 6 is (answer space).
Answer: 5
- 6 − 1 = 5
5.One more than 10 is (answer space).
Answer: 11
- 10 + 1 = 11
6.One more than 17 is (answer space).
Answer: 18
- 17 + 1 = 18
7.One less than 13 is (answer space).
Answer: 12
- 13 − 1 = 12
8.One more than 19 is (answer space).
Answer: 20
- 19 + 1 = 20
9.One more than 13 is (answer space).
Answer: 14
- 13 + 1 = 14
10.One less than 4 is (answer space).
Answer: 3
- 4 − 1 = 3
11.One more than 14 is (answer space).
Answer: 15
- 14 + 1 = 15
12.One less than 18 is (answer space).
Answer: 17
- 18 − 1 = 17
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.