AI Generated Quiz

Primary 1 Mathematics Addition Subtraction Quiz

Free P1 Maths Addition Subtraction quiz, HY3 AI version, with questions, answers, and syllabus-aligned practice for Singapore students.

These static practice materials are generated from the site's syllabus and paper-generation workflow, with source and model context shown so students and parents can evaluate the material before use.

Primary 1 Mathematics AI Generated Generated by Tencent HY3 Free Updated 2026-08-17

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Questions

Primary 1 Mathematics Quiz - Addition Subtraction

Name: ___________________________
Class: ___________________________
Date: ___________________________
Score: _______ / 20

Duration: 40 minutes
Total Marks: 20

Instructions:

This quiz has 20 questions on Addition and Subtraction.
Write your answers in the spaces provided.
Do your working clearly if needed.
This quiz is generated from syllabus-first practice templates. It is not based on past-year exam papers.

Section A: Basic Addition and Subtraction (Questions 1–8)

(1 mark each)

1. $7 + 5 =$ ______

2. $13 - 4 =$ ______

3. $9 + 8 =$ ______

4. $15 - 7 =$ ______

5. $6 + 6 + 4 =$ ______

6. $20 - 9 =$ ______

7. $11 + 3 =$ ______

8. $18 - 10 =$ ______

Section B: Addition and Subtraction Within 100 (Questions 9–14)

(1–2 marks each)

9. $34 + 12 =$ ______ (1 mark)

10. $58 - 23 =$ ______ (1 mark)

11. $45 + 30 =$ ______ (1 mark)

12. $72 - 40 =$ ______ (1 mark)

13. $63 + 25 =$ ______ (2 marks)

14. $81 - 37 =$ ______ (2 marks)

Section C: Word Problems (Questions 15–20)

(2–3 marks each)

15. Siti has 12 stickers. She buys 7 more stickers. How many stickers does Siti have altogether? (2 marks)
Answer: ______

16. Ahmad has 45 marbles. Raj has 28 marbles. How many more marbles does Ahmad have than Raj? (2 marks)
Answer: ______

17. Mei Ling had 60 stickers. She gave 15 stickers to her friend and bought 20 more stickers. How many stickers does Mei Ling have now? (3 marks)
Answer: ______

18. There are 25 boys and 18 girls in a class. How many children are there altogether? (2 marks)
Answer: ______

19. A shop sold 36 red balloons and 19 blue balloons. How many fewer blue balloons than red balloons were sold? (2 marks)
Answer: ______

20. Ravi had 50 cents. He spent 23 cents on a pencil. How many cents does he have left? (3 marks)
Answer: ______

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Answers

Primary 1 Mathematics Quiz - Addition Subtraction (Answer Key)

Topic: Addition and Subtraction
Level: Primary 1
Total Marks: 20
Note: This is syllabus-first practice content. Not derived from past-year exams.

Section A: Basic Addition and Subtraction (Q1–8)

Q1. $7 + 5 = 12$
Marks: 1
Teaching note: Start at 7, count on 5: 8, 9, 10, 11, 12. Addition means putting together.

Q2. $13 - 4 = 9$
Marks: 1
Teaching note: Subtraction is taking away. From 13, count back 4: 12, 11, 10, 9.

Q3. $9 + 8 = 17$
Marks: 1
Teaching note: Count on from 9: 10, 11, 12, 13, 14, 15, 16, 17.

Q4. $15 - 7 = 8$
Marks: 1
Teaching note: Take away 7 from 15 by counting back: 14, 13, 12, 11, 10, 9, 8.

Q5. $6 + 6 + 4 = 16$
Marks: 1
Teaching note: Add in order: $6+6=12$ , then $12+4=16$ . Adding more than two numbers.

Q6. $20 - 9 = 11$
Marks: 1
Teaching note: Count back 9 from 20: 19, 18, 17, 16, 15, 14, 13, 12, 11.

Q7. $11 + 3 = 14$
Marks: 1
Teaching note: Add ones to a 2-digit number: 11 and 3 more is 14.

Q8. $18 - 10 = 8$
Marks: 1
Teaching note: Subtract tens: 18 take away 10 leaves 8.

Section B: Addition and Subtraction Within 100 (Q9–14)

Q9. $34 + 12 = 46$
Marks: 1
Teaching note: Add tens (30+10=40) and ones (4+2=6), so 46.

Q10. $58 - 23 = 35$
Marks: 1
Teaching note: Subtract tens (50-20=30) and ones (8-3=5), so 35.

Q11. $45 + 30 = 75$
Marks: 1
Teaching note: Add tens to a 2-digit number: 40+30=70, plus 5 = 75.

Q12. $72 - 40 = 32$
Marks: 1
Teaching note: Subtract tens: 70-40=30, plus 2 = 32.

Q13. $63 + 25 = 88$
Marks: 2
Working:

Tens: $60 + 20 = 80$
Ones: $3 + 5 = 8$
Total: $80 + 8 = 88$
Teaching note: No regrouping needed. Show both place-value steps for full marks.

Q14. $81 - 37 = 44$
Marks: 2
Working:

Ones: 1 cannot take 7, so borrow 1 ten → 11 - 7 = 4
Tens: 7 - 3 = 4
Answer: 44
Teaching note: Renaming (regrouping) is allowed in P1 subtraction within 100. Common mistake: 81-37 = 56 (forgetting to reduce tens).

Section C: Word Problems (Q15–20)

Q15. 19 stickers
Marks: 2
Working: $12 + 7 = 19$
Marking: 1 mark for correct number sentence, 1 mark for correct answer.
Teaching note: "Buys more" and "altogether" tell us to add.

Q16. 17 marbles
Marks: 2
Working: $45 - 28 = 17$
Marking: 1 mark for correct subtraction, 1 mark for answer.
Teaching note: "How many more" means find the difference by subtracting smaller from larger.

Q17. 65 stickers
Marks: 3
Working:

Step 1: $60 - 15 = 45$ (gave away)
Step 2: $45 + 20 = 65$ (bought more)
Marking: 1 mark each step, 1 mark final answer.
Teaching note: Do operations in story order. Two-step problem.

Q18. 43 children
Marks: 2
Working: $25 + 18 = 43$
Marking: 1 mark sentence, 1 mark answer.
Teaching note: "Altogether" → add boys and girls.

Q19. 17 balloons
Marks: 2
Working: $36 - 19 = 17$
Marking: 1 mark sentence, 1 mark answer.
Teaching note: "Fewer than" → compare by subtraction.

Q20. 27 cents
Marks: 3
Working:

Start: 50 cents
Spent: 23 cents
Left: $50 - 23 = 27$ cents
Marking: 1 mark for sentence, 1 mark method, 1 mark answer with unit.
Teaching note: Money context; always write unit "cents".