Year 4 Ten More, Ten Less (and One More, One Less) Worksheet — Level 1 — 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 — Level 1 — Answers
Use place value: ten more or ten less changes the tens digit.
1.One less than 18 is (answer space).
Answer: 17
- 18 − 1 = 17
2.Ten more than 51 is (answer space).
Answer: 61
- 51 + 10 = 61
3.One more than 58 is (answer space).
Answer: 59
- 58 + 1 = 59
4.One less than 53 is (answer space).
Answer: 52
- 53 − 1 = 52
5.One more than 20 is (answer space).
Answer: 21
- 20 + 1 = 21
6.Ten less than 13 is (answer space).
Answer: 3
- 13 − 10 = 3
7.One more than 22 is (answer space).
Answer: 23
- 22 + 1 = 23
8.One more than 49 is (answer space).
Answer: 50
- 49 + 1 = 50
9.One more than 15 is (answer space).
Answer: 16
- 15 + 1 = 16
10.Ten less than 36 is (answer space).
Answer: 26
- 36 − 10 = 26
11.Ten less than 11 is (answer space).
Answer: 1
- 11 − 10 = 1
12.Ten less than 78 is (answer space).
Answer: 68
- 78 − 10 = 68
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.