Primary 4 Mathematics · Chapter 10 · Practice sheet

Lesson 10.1: Addition of Decimals

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Section A · Multiple choice 4 marks

1. 3.4 + 5.3 = ?1 mark

(A) 8.07(B) 2.1(C) 8.7(D) 87

2. 4.26 + 3.51 = ?1 mark

(A) 7.67(B) 8.77(C) 0.777(D) 7.77

3. 7.6 + 2.8 = ?1 mark

(A) 10.4(B) 9.14(C) 10.14(D) 9.4

4. 2.9 + 4.75 = ?1 mark

(A) 7.15(B) 7.65(C) 6.65(D) 7.4

Section B · Write your answer 11 marks

5. 2.7 + 6.2 = ______1 mark

6. 5.08 + 3.41 = ______1 mark

7. 4.9 + 3.6 = ______1 mark

8. 3.67 + 2.85 = ______1 mark

9. 15.8 + 4.35 = ______2 marks

10. 9.48 + 0.52 = ______1 mark

11. 36.4 + 7.89 = ______2 marks

12. A rope is 12.35 m long. Another rope is 8.9 m long. What is the total length of the two ropes?2 marks

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Primary 4 Mathematics · Chapter 10 · Practice sheet

Lesson 10.2: Subtraction of Decimals

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Section A · Multiple choice 4 marks

1. 8.6 − 3.4 = ?1 mark

(A) 5.02(B) 12(C) 4.2(D) 5.2

2. 7.45 − 2.31 = ?1 mark

(A) 5.14(B) 5.24(C) 4.14(D) 5.16

3. 6.3 − 2.7 = ?1 mark

(A) 4.6(B) 3.6(C) 4.4(D) 3.4

4. 9.02 − 3.57 = ?1 mark

(A) 6.55(B) 5.55(C) 5.45(D) 6.45

Section B · Write your answer 11 marks

5. 9.8 − 4.5 = ______1 mark

6. 8.75 − 3.42 = ______1 mark

7. 7.2 − 3.9 = ______1 mark

8. 6.14 − 2.78 = ______1 mark

9. 10 − 3.6 = ______2 marks

10. 8 − 2.45 = ______1 mark

11. 52.3 − 17.86 = ______2 marks

12. A tank holds 25 ℓ of water. 8.75 ℓ are used. How much water is left?2 marks

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Primary 4 Mathematics · Chapter 10 · Practice sheet

Lesson 10.3: Word Problems: Adding and Subtracting

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Section A · Multiple choice 4 marks

1. Nina walks 3.25 km to the park and then 1.8 km to the library. How far does she walk in all?1 mark

(A) 5.05 km(B) 1.45 km(C) 5.43 km(D) 4.43 km

2. Ben has $12.60. He spends $4.35. How much money does he have left?1 mark

(A) $16.95(B) $8.25(C) $8.35(D) $7.25

3. Ribbon A is 7.5 m long. It is 2.25 m longer than Ribbon B. How long is Ribbon B?1 mark

(A) 9.75 m(B) 5.35 m(C) 5.25 m(D) 4.25 m

4. A pumpkin has a mass of 4.8 kg. A melon has a mass of 6.35 kg. How much heavier is the melon?1 mark

(A) 11.15 kg(B) 2.55 kg(C) 1.45 kg(D) 1.55 kg

Section B · Write your answer 11 marks

5. Two bags have masses of 2.45 kg and 3.8 kg. What is their total mass?1 mark

6. A jug had 3.5 ℓ of juice. 1.75 ℓ were poured out. How much juice is left?1 mark

7. A book costs $8.90 and a pen costs $2.65. What is the total cost?1 mark

8. Tom pays $20 for a toy that costs $13.45. How much change does he get?1 mark

9. A train ride is 12.6 km. A bus ride is 4.75 km longer than the train ride. How long is the bus ride?1 mark

10. Sara has 18.5 m of cloth. She uses 6.75 m for curtains and 4.9 m for cushions. How much cloth is left?2 marks

11. Amy has a mass of 14.25 kg. Bob is 3.6 kg lighter than Amy. What is the total mass of Amy and Bob?2 marks

12. A tank holds 10 ℓ. Wayne pours in 2.85 ℓ and then 4.76 ℓ of water. How much more water is needed to fill the tank?2 marks

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Primary 4 Mathematics · Chapter 10 · Practice sheet

Lesson 10.4: Multiplication of Decimals

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Section A · Multiple choice 4 marks

1. 0.4 × 3 = ?1 mark

(A) 12(B) 1.2(C) 0.12(D) 7

2. 2.3 × 4 = ?1 mark

(A) 8.12(B) 8.2(C) 9.2(D) 92

3. 3.06 × 5 = ?1 mark

(A) 15.03(B) 1.53(C) 153(D) 15.3

4. 4.28 × 3 = ?1 mark

(A) 12.84(B) 12.24(C) 13.84(D) 128.4

Section B · Write your answer 11 marks

5. 0.05 × 8 = ______1 mark

6. 0.7 × 6 = ______1 mark

7. 5.4 × 3 = ______1 mark

8. 6.25 × 4 = ______1 mark

9. 12.6 × 5 = ______1 mark

10. 3.48 × 9 = ______2 marks

11. 45.07 × 6 = ______2 marks

12. Each pack of cards costs $4.85. How much do 6 packs cost?2 marks

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Primary 4 Mathematics · Chapter 10 · Practice sheet

Lesson 10.5: Division of Decimals

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Section A · Multiple choice 4 marks

1. 0.8 ÷ 2 = ?1 mark

(A) 4(B) 0.04(C) 0.4(D) 0.2

2. 4.8 ÷ 3 = ?1 mark

(A) 16(B) 1.2(C) 0.16(D) 1.6

3. 7.5 ÷ 5 = ?1 mark

(A) 1.5(B) 15(C) 1.05(D) 0.15

4. 9.12 ÷ 4 = ?1 mark

(A) 2.82(B) 2.28(C) 2.38(D) 22.8

Section B · Write your answer 11 marks

5. 0.06 ÷ 2 = ______1 mark

6. 8.4 ÷ 6 = ______1 mark

7. 5.04 ÷ 7 = ______1 mark

8. 3 ÷ 4 = ______1 mark

9. 17 ÷ 5 = ______1 mark

10. 36.4 ÷ 8 = ______2 marks

11. 5 ÷ 6 = ______ (correct to 1 decimal place)2 marks

12. 10 ÷ 3 = ______ (correct to 2 decimal places)2 marks

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Primary 4 Mathematics · Chapter 10 · Practice sheet

Lesson 10.6: Word Problems: Multiplying and Dividing

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Section A · Multiple choice 4 marks

1. A book costs $3.85. How much do 4 books cost?1 mark

(A) $12.40(B) $7.85(C) $154(D) $15.40

2. A 7.5 m rope is cut into 5 equal pieces. How long is each piece?1 mark

(A) 1.5 m(B) 2.5 m(C) 0.15 m(D) 15 m

3. Mia buys 6 bottles of juice. Each bottle holds 1.25 ℓ. How much juice does she buy?1 mark

(A) 6.25 ℓ(B) 7.5 ℓ(C) 7.25 ℓ(D) 75 ℓ

4. 18.6 kg of sand is shared equally among 3 boxes. How much sand is in each box?1 mark

(A) 62 kg(B) 5.2 kg(C) 6.2 kg(D) 6.02 kg

Section B · Write your answer 11 marks

5. Eight pencils cost $0.65 each. How much do they cost altogether?1 mark

6. A 12.8 m wire is cut into 4 equal pieces. How long is each piece?1 mark

7. Bag A has a mass of 2.45 kg. Bag B is 3 times as heavy as Bag A. What is the mass of Bag B?1 mark

8. A packet holds 0.75 kg of rice. How much rice is in 6 packets?1 mark

9. $54.60 is shared equally among 7 children. How much does each child get?1 mark

10. Mr Roy buys 5 pens at $2.40 each. He pays with a $20 note. How much change does he get?2 marks

11. Peter’s rope is 4 times as long as Sam’s rope. Together the two ropes are 15.5 m long. How long is Peter’s rope?2 marks

12. Ali saves $3.75 each week for 8 weeks. He then spends $12.50. How much money does he have left?2 marks

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Primary 4 Mathematics · Chapter 10 · Revision paper

Chapter 10 Revision Paper: Four Operations of Decimals

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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

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

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

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

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

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

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

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

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