Shukr Learns
Primary 4 Mathematics · Chapter 6 · Answers and explanations

Lesson 6.2: Addition and Subtraction of Fractions (answers)

Section A · Multiple choice 4 marks

1. Find the value of 34 + 58.1 mark

3458
(A) 812(B) 1 38(C) 78(D) 1 18
Answer: (B) 1 3834 = 68. 68 + 58 = 118. Change to a mixed number: 118 = 1 38.

2. Find the value of 1 − 38.1 mark

58381
(A) 78(B) 38(C) 58(D) 28
Answer: (C) 581 = 88. 88 − 38 = 58.

3. Find the value of 3 − 1 25.1 mark

(A) 2 35(B) 1 25(C) 2 25(D) 1 35
Answer: (D) 1 353 − 1 = 2, then 2 − 25: take 1 whole and write it as 55.
1 + (55 − 25) = 1 + 35 = 1 35.

4. Find the value of 2 12 + 1 34.1 mark

(A) 4 14(B) 3 14(C) 3 46(D) 4 34
Answer: (A) 4 14Add the wholes: 2 + 1 = 3. Add the fractions: 12 + 34 = 24 + 34 = 54 = 1 14.
3 + 1 14 = 4 14.

Section B · Write your answer 11 marks

5. Find the value of 56 + 13. Give your answer as a mixed number.1 mark

Answer: 1 1613 = 26. 56 + 26 = 76 = 1 16.

6. Find the value of 710 + 45. Give your answer in the simplest form.1 mark

Answer: 1 1245 = 810. 710 + 810 = 1510 = 1 510 = 1 12.

7. Find the value of 1 − 512.1 mark

5127121
Answer: 7121 = 1212. 1212 − 512 = 712.

8. Find the value of 4 − 2 34.1 mark

Answer: 1 144 − 2 = 2, then 2 − 34: 2 = 1 + 44, so 1 + (44 − 34) = 1 + 14 = 1 14.

9. Find the value of 1 38 + 2 12.1 mark

Answer: 3 78Wholes: 1 + 2 = 3. Fractions: 38 + 12 = 38 + 48 = 78.
3 + 78 = 3 78.

10. Find the value of 2 78 + 1 34.2 marks

Answer: 4 58Wholes: 2 + 1 = 3. Fractions: 78 + 34 = 78 + 68 = 138 = 1 58.
3 + 1 58 = 4 58.

11. Find the value of 3 78 − 1 12.2 marks

Answer: 2 38Wholes: 3 − 1 = 2. Fractions: 78 − 12 = 78 − 48 = 38.
2 + 38 = 2 38.

12. Ali ran 1 12 km on Monday and 2 34 km on Tuesday. How far did he run in all?2 marks

112234? km
Answer: 4 14 km1 12 + 2 34: wholes 1 + 2 = 3. Fractions: 12 + 34 = 24 + 34 = 54 = 1 14.
3 + 1 14 = 4 14. He ran 4 14 km.
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