1st Grade Ten More, Ten Less (and One More, One Less) Worksheet — Getting Started — Practice Set 4 — Answers
Answer sheet with worked solutions for the 1st Grade place value worksheet.
Success TutoringWorksheetsAnswer sheet1st Grade · Mathematics · Place Value1st Grade 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 7 is (answer space).
Answer: 8
- 7 + 1 = 8
2.One more than 13 is (answer space).
Answer: 14
- 13 + 1 = 14
3.One more than 19 is (answer space).
Answer: 20
- 19 + 1 = 20
4.One less than 18 is (answer space).
Answer: 17
- 18 − 1 = 17
5.One less than 20 is (answer space).
Answer: 19
- 20 − 1 = 19
6.One more than 3 is (answer space).
Answer: 4
- 3 + 1 = 4
7.One less than 1 is (answer space).
Answer: 0
- 1 − 1 = 0
8.One less than 12 is (answer space).
Answer: 11
- 12 − 1 = 11
9.One more than 12 is (answer space).
Answer: 13
- 12 + 1 = 13
10.One more than 14 is (answer space).
Answer: 15
- 14 + 1 = 15
11.One more than 18 is (answer space).
Answer: 19
- 18 + 1 = 19
12.One more than 11 is (answer space).
Answer: 12
- 11 + 1 = 12
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.