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Primary 5 Mathematics Addition Subtraction Quiz

Free P5 Maths Addition Subtraction quiz, AI version, with questions, answers, and syllabus-aligned practice for Singapore students.

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Primary 5 Mathematics AI Generated Generated by DeepSeek V4 Flash Sample 02 Updated 2026-08-17

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Questions

Primary 5 Mathematics Quiz - Addition Subtraction

Name: _________________________ Class: _________________________ Date: _________________________ Score: ________ / 50

Duration: 45 minutes Total Marks: 50

Instructions:

Answer all questions.
Show your working clearly for all questions.
You may use a calculator only where indicated.
Write your answers in the spaces provided.
The number of marks for each question is shown in brackets [ ].

Section A: Mental and Direct Calculations (Questions 1 - 5)

Answer each question directly. Show any working in the space provided.

1. Find the sum of 48 215 and 31 786.

Answer: _______________ [1]

2. Subtract 27 459 from 60 000.

Answer: _______________ [1]

3. What number is 12 500 more than 87 650?

Answer: _______________ [1]

4. The sum of two numbers is 95 000. One of the numbers is 42 380. What is the other number?

Answer: _______________ [1]

5. Find the difference between 100 000 and 63 472.

Answer: _______________ [1]

Section B: Short-Answer Questions (Questions 6 - 15)

Show your working clearly in the space provided. Marks are awarded for correct working and the correct answer.

6. A shop sold 23 450 packets of noodles in January and 28 670 packets in February. How many packets of noodles were sold in the two months altogether?

Working: _________________________

Answer: _______________ [2]

7. A factory produced 56 780 toy cars. It sold 39 245 of them. How many toy cars were not sold?

Working: _________________________

Answer: _______________ [2]

8. A number is 18 650 less than 75 000. What is the number?

Working: _________________________

Answer: _______________ [2]

9. The total mass of two sacks of rice is 84 kg. One sack has a mass of 37.5 kg. What is the mass of the other sack?

Working: _________________________

Answer: _______________ [2]

10. A book has 245 pages. A magazine has 168 pages. How many more pages does the book have than the magazine?

Working: _________________________

Answer: _______________ [2]

11. A lorry carried 12 450 kg of sand on Monday and 15 780 kg of sand on Tuesday. What was the total mass of sand carried on the two days?

Working: _________________________

Answer: _______________ [2]

12. A school has 1 250 boys and 1 180 girls. How many more boys than girls are there in the school?

Working: _________________________

Answer: _______________ [2]

13. A tank contained 45 ℓ of water. 12.5 ℓ of water was used. How much water was left in the tank?

Working: _________________________

Answer: _______________ [2]

14. A farmer harvested 8 650 kg of vegetables. He sold 3 275 kg of the vegetables. How many kilograms of vegetables were not sold?

Working: _________________________

Answer: _______________ [2]

15. A number when added to 28 456 gives 70 000. What is the number?

Working: _________________________

Answer: _______________ [2]

Section C: Problem-Solving Questions (Questions 16 - 20)

Show your working clearly in the space provided. Marks are awarded for correct working and the correct answer.

16. A company has 45 680 employees. It hires 3 250 more employees. How many employees does the company have now?

Working: _________________________

Answer: _______________ [3]

17. A shop had 50 000 kg of rice. It sold 18 750 kg in the morning and 15 500 kg in the afternoon. How many kilograms of rice were left?

Working: _________________________

Answer: _______________ [3]

18. A number is 12 345 more than 23 456. What is the number?

Working: _________________________

Answer: _______________ [3]

19. A farmer has 12 500 chickens. He sells 4 380 chickens. How many chickens does he have left?

Working: _________________________

Answer: _______________ [3]

20. A tank has 25 000 ℓ of water. Another tank has 18 750 ℓ of water. How much more water is in the first tank than the second tank?

Working: _________________________

Answer: _______________ [3]

END OF QUIZ

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Answers

Answer Key: Primary 5 Mathematics Quiz - Addition Subtraction

Total Marks: 50

Section A: Mental and Direct Calculations (Questions 1 - 5)

1. 80 001

Marks: 1
Working: 48 215 + 31 786 = 80 001
Explanation: Align the numbers by place value and add from right to left. 5 + 6 = 11, write 1 carry 1; 1 + 8 + 1 = 10, write 0 carry 1; 2 + 7 + 1 = 10, write 0 carry 1; 8 + 1 + 1 = 10, write 0 carry 1; 4 + 3 + 1 = 8. The result is 80 001.

2. 32 541

Marks: 1
Working: 60 000 - 27 459 = 32 541
Explanation: Subtract using regrouping. Since 60 000 has zeros, borrow from the ten-thousands place. 60 000 - 27 459 = 32 541.

3. 100 150

Marks: 1
Working: 87 650 + 12 500 = 100 150
Explanation: Add the two numbers. 87 650 + 12 500 = 100 150.

4. 52 620

Marks: 1
Working: 95 000 - 42 380 = 52 620
Explanation: To find the missing addend, subtract the known addend from the sum. 95 000 - 42 380 = 52 620.

5. 36 528

Marks: 1
Working: 100 000 - 63 472 = 36 528
Explanation: Subtract 63 472 from 100 000. Borrow from the hundred-thousands place. 100 000 - 63 472 = 36 528.

Section B: Short-Answer Questions (Questions 6 - 15)

6. 52 120 packets

Marks: 2 (1 mark for correct working, 1 mark for correct answer)
Working: 23 450 + 28 670 = 52 120
Explanation: This is an addition problem. Add the number of packets sold in January and February. 23 450 + 28 670 = 52 120 packets.

7. 17 535 toy cars

Marks: 2 (1 mark for correct working, 1 mark for correct answer)
Working: 56 780 - 39 245 = 17 535
Explanation: This is a subtraction problem. Subtract the number of toy cars sold from the total produced. 56 780 - 39 245 = 17 535 toy cars.

8. 56 350

Marks: 2 (1 mark for correct working, 1 mark for correct answer)
Working: 75 000 - 18 650 = 56 350
Explanation: "Less than" means subtraction. Subtract 18 650 from 75 000. 75 000 - 18 650 = 56 350.

9. 46.5 kg

Marks: 2 (1 mark for correct working, 1 mark for correct answer)
Working: 84 - 37.5 = 46.5
Explanation: This is a subtraction problem with decimals. Subtract the mass of the known sack from the total mass. 84 - 37.5 = 46.5 kg.

10. 77 pages

Marks: 2 (1 mark for correct working, 1 mark for correct answer)
Working: 245 - 168 = 77
Explanation: "How many more" means subtraction. Subtract the number of pages in the magazine from the number of pages in the book. 245 - 168 = 77 pages.

11. 28 230 kg

Marks: 2 (1 mark for correct working, 1 mark for correct answer)
Working: 12 450 + 15 780 = 28 230
Explanation: This is an addition problem. Add the mass of sand carried on both days. 12 450 + 15 780 = 28 230 kg.

12. 70 boys

Marks: 2 (1 mark for correct working, 1 mark for correct answer)
Working: 1 250 - 1 180 = 70
Explanation: "How many more" means subtraction. Subtract the number of girls from the number of boys. 1 250 - 1 180 = 70 boys.

13. 32.5 ℓ

Marks: 2 (1 mark for correct working, 1 mark for correct answer)
Working: 45 - 12.5 = 32.5
Explanation: This is a subtraction problem with decimals. Subtract the amount of water used from the total amount. 45 - 12.5 = 32.5 ℓ.

14. 5 375 kg

Marks: 2 (1 mark for correct working, 1 mark for correct answer)
Working: 8 650 - 3 275 = 5 375
Explanation: This is a subtraction problem. Subtract the amount sold from the total harvested. 8 650 - 3 275 = 5 375 kg.

15. 41 544

Marks: 2 (1 mark for correct working, 1 mark for correct answer)
Working: 70 000 - 28 456 = 41 544
Explanation: To find the missing addend, subtract the known addend from the sum. 70 000 - 28 456 = 41 544.

Section C: Problem-Solving Questions (Questions 16 - 20)

16. 48 930 employees

Marks: 3 (1 mark for correct working, 1 mark for correct method, 1 mark for correct answer)
Working: 45 680 + 3 250 = 48 930
Explanation: This is an addition problem. Add the number of new employees to the original number of employees. 45 680 + 3 250 = 48 930 employees.

17. 15 750 kg

Marks: 3 (1 mark for correct working, 1 mark for correct method, 1 mark for correct answer)
Working: 18 750 + 15 500 = 34 250; 50 000 - 34 250 = 15 750
Explanation: This is a two-step problem. First, find the total amount of rice sold by adding the morning and afternoon sales. Then, subtract the total sold from the initial amount. 18 750 + 15 500 = 34 250 kg sold. 50 000 - 34 250 = 15 750 kg left.

18. 35 801

Marks: 3 (1 mark for correct working, 1 mark for correct method, 1 mark for correct answer)
Working: 23 456 + 12 345 = 35 801
Explanation: "More than" means addition. Add 12 345 to 23 456. 23 456 + 12 345 = 35 801.

19. 8 120 chickens

Marks: 3 (1 mark for correct working, 1 mark for correct method, 1 mark for correct answer)
Working: 12 500 - 4 380 = 8 120
Explanation: This is a subtraction problem. Subtract the number of chickens sold from the total number of chickens. 12 500 - 4 380 = 8 120 chickens.

20. 6 250 ℓ

Marks: 3 (1 mark for correct working, 1 mark for correct method, 1 mark for correct answer)
Working: 25 000 - 18 750 = 6 250
Explanation: "How much more" means subtraction. Subtract the amount of water in the second tank from the amount in the first tank. 25 000 - 18 750 = 6 250 ℓ.

END OF ANSWER KEY