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Primary 4 Mathematics · Chapter 10 · Revision paper

Chapter 10 Revision Paper: Four Operations of Decimals

Name:Date:Marks:    / 30

Time: 40 minutes. Calculators are not allowed. Show your working in Section C.

Section A · Multiple choice 10 marks

1. 3.45 + 2.8 = ?1 mark

(A) 3.73(B) 5.25(C) 6.53(D) 6.25

2. 0.678 + 1.9 = ?1 mark

(A) 2.578(B) 1.578(C) 0.697(D) 2.687

3. 7.2 − 3.46 = ?1 mark

(A) 4.46(B) 3.74(C) 3.86(D) 4.26

4. 5 − 2.37 = ?1 mark

(A) 3.63(B) 2.73(C) 2.63(D) 3.37

5. A red rope is 8.4 m long. A blue rope is 2.75 m shorter than the red rope. How long is the blue rope?1 mark

(A) 11.15 m(B) 6.35 m(C) 5.75 m(D) 5.65 m

6. 0.6 × 7 = ?1 mark

(A) 4.2(B) 42(C) 0.42(D) 4.7

7. 3.06 × 4 = ?1 mark

(A) 12.024(B) 12.24(C) 12.4(D) 1.224

8. 0.37 × 100 = ?1 mark

(A) 3.7(B) 370(C) 37(D) 3700

9. 7.35 ÷ 3 = ?1 mark

(A) 2.5(B) 2.05(C) 24.5(D) 2.45

10. $26.40 is shared equally among 8 children. How much does each child get?1 mark

(A) $3.30(B) $3.03(C) $0.33(D) $33.00

Section B · Short answers 4 marks

11. 12.4 + 5.76 = ______1 mark

12. 10 − 6.085 = ______1 mark

13. 12.75 × 6 = ______1 mark

14. 19.32 ÷ 6 = ______1 mark

Section C · Show your working 16 marks

15. Lina buys a bag for $12.80 and a hat for $7.45. She pays with a $50 note. How much change does she get?2 marks

Money$12.80$7.45?$50

16. Rope A is 6.4 m long. Rope B is 1.85 m shorter than Rope A. What is the total length of the two ropes?2 marks

Rope A6.4 mRope B?1.85 m

17. Each bottle holds 1.35 ℓ of juice. How much juice is there in 6 such bottles?2 marks

Juice1.35 ℓ1.35 ℓ1.35 ℓ1.35 ℓ1.35 ℓ1.35 ℓ?

18. A 14.4 m ribbon is cut into 8 equal pieces. Mrs Ong uses 3 of the pieces. What is the total length of the pieces she uses?2 marks

Ribbon???14.4 m

19. Fish costs $9.65 per kg. Mr Lim buys 4 kg of fish and pays with a $50 note. How much change does he get?2 marks

Fish$9.65$9.65$9.65$9.65Paid$50?

20. A notebook costs $3.50. The notebook and 5 identical pens cost $11.25 altogether. What is the cost of one pen?2 marks

Total$3.50?????$11.25

21. Bag A is 3 times as heavy as Bag B. Bag A is 7.2 kg heavier than Bag B. What is the total mass of the two bags?2 marks

Bag BBag A7.2 kg

22. Dev has 4 times as much money as Eli. Dev gives Eli $9.60. Then they have the same amount of money. How much money did Dev have at first?2 marks

DevEligives $9.60
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