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Primary 1 Maths: Addition and Subtraction within 100 — Practice Paper 1 (10 Questions)
Primary 1 Maths: Addition and Subtraction within 100 — Practice Paper 1 (10 Questions)
Paper 1 follows the five steps of the lesson plan: make-ten within 20, column carrying, column borrowing, then three-number addition and a change problem. Every answer shows the middle step so parents can see where it went wrong.
Quick answer 10 questions, about 15 minutes. Items 01 to 04 are within 20, items 05 to 07 are two-digit column work with carrying and borrowing, items 08 and 09 are three-number addition and change, item 10 targets forgetting to reduce the tens after borrowing.
01 Paper details (check answers afterwards)
| Item | Detail |
|---|---|
| Questions | 10 questions |
| Suggested time | 15 minutes |
| Difficulty mix | Foundation 4 · Intermediate 3 · Challenge 2 · Error redo 1 |
| Chapter | Chapter: Primary 1 Maths: Addition and Subtraction within 100 — Tutor Lesson Plan |
| Level | Primary 1 |
02 Questions (10 items)
- FoundationUse the make-ten method: 9 + 7
- FoundationWork out: 16 − 9
- FoundationWork out: 8 + 5
- FoundationWork out: 15 − 7
- IntermediateUse column form: 45 + 28
- IntermediateUse column form: 64 − 38
- IntermediateUse column form: 36 + 27
- ChallengeWork out: 28 + 35 + 17
- ChallengeMan has $62 and buys a $37 book. How much is left?
- Error redoUse column form: 84 − 57 (common slip: forgetting the borrowed 1 and answering 37)
03 Answers and one-line notes
| # | Answer | One-line note |
|---|---|---|
| 1 | 16 | 9 needs 1 to reach 10: take 1 from the 7 for 9 + 1 = 10, then add the other 6 to get 16. |
| 2 | 7 | Take 6 first to reach 10, then the other 3: 16 − 6 − 3 = 7. |
| 3 | 13 | 8 needs 2 to reach 10: take 2 from the 5 for 8 + 2 = 10, then add the 3 to get 13. |
| 4 | 8 | Take 5 first to reach 10, then the other 2: 15 − 5 − 2 = 8. |
| 5 | 73 | Units: 5 + 8 = 13, write 3 and carry 1; tens: 4 + 2 + 1 = 7, so 73. |
| 6 | 26 | Units: 4 is less than 8, borrow 1 for 14 − 8 = 6; tens: 5 − 3 = 2, so 26. |
| 7 | 63 | Units: 6 + 7 = 13, write 3 and carry 1; tens: 3 + 2 + 1 = 6, so 63. |
| 8 | 80 | First 28 + 35 = 63 (carry 1), then add 17: 63 + 17 = 80 (carry 1 again, tens 6 + 1 + 1 = 8). |
| 9 | $25 | Units: 2 is less than 7, borrow 1 for 12 − 7 = 5; tens 5 − 3 = 2, so $25 is left. |
| 10 | 27 | Units: 4 is less than 7, borrow 1 for 14 − 7 = 7; tens: 8 loses 1 to become 7, and 7 − 5 = 2, so 27. |
04 What to do after marking
- After marking, redo only the wrong items and write down which step went wrong (formula, unit, or misread number).
- Repeat the same item two days later; move to the next paper only when both attempts are correct.
- Parents only need the answer and note columns; there is no need to explain every item.
Questions and answers are written originally by the TutorZone team and are not taken from any school, publisher or examination authority paper. Every value is checked by computer.
