Primary 4 Mathematics · Chapter 9 · Revision paper

Chapter 9 Revision Paper: 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. The number line shows 10 equal parts between 6 and 7. Which decimal does the arrow point to?1 mark

(A) 6.03(B) 6.7(C) 6.3(D) 7.3

2. What is the value of the digit 6 in 12.964?1 mark

(A) 0.6(B) 0.006(C) 6(D) 0.06

3. Which decimal is the same as 6 ones and 4 hundredths?1 mark

(A) 6.04(B) 6.4(C) 6.004(D) 64

4. Which decimal is the same as 8 + 0.03 + 0.004?1 mark

(A) 8.34(B) 8.034(C) 8.304(D) 8.0034

5. Which of these is NOT equal to 2.5?1 mark

(A) 2.50(B) 2.500(C) 2.05(D) 2 12

6. Which is the greatest?1 mark

(A) 4.09(B) 4.19(C) 4.091(D) 4.9

7. Which list shows the decimals in order, from the smallest to the greatest?1 mark

(A) 0.508, 0.58, 0.8, 0.85(B) 0.508, 0.58, 0.85, 0.8(C) 0.58, 0.508, 0.8, 0.85(D) 0.85, 0.8, 0.58, 0.508

8. What is the next number in the pattern? 7.45, 7.40, 7.35, 7.30, ____1 mark

(A) 7.20(B) 7.25(C) 7.29(D) 7.15

9. Round 3.846 to 2 decimal places.1 mark

(A) 3.84(B) 3.8(C) 3.85(D) 3.9

10. Express 0.45 as a fraction in its simplest form.1 mark

(A) 45100(B) 9100(C) 45(D) 920

Section B · Short answers 4 marks

11. Round 4.396 to 1 decimal place.1 mark

12. Express 725 as a decimal.1 mark

13. Express 3.6 as a mixed number in its simplest form.1 mark

14. Find the missing number in the pattern. 1.20, 1.35, 1.50, ____, 1.801 mark

Section C · Show your working 16 marks

15. A string has 100 beads. 6 beads are red and 30 beads are blue.
(a) Express the fraction of red beads as a decimal.
(b) Express the fraction of blue beads as a decimal.2 marks

16. A decimal has 3 in the ones place, 0 in the tenths place, 8 in the hundredths place and 5 in the thousandths place.
(a) Write the decimal.
(b) What is the value of the digit 8?2 marks

17. Arrange these decimals in order, from the greatest to the smallest.
2.4, 2.04, 2.404, 2.442 marks

18. Look at the number pattern: 0.90, 1.15, 1.40, 1.65, ...
(a) What is the rule?
(b) What is the 6th number in the pattern?2 marks

19. A rope is 7.96 m long.
(a) Round its length to 1 decimal place.
(b) Round its length to the nearest whole number.2 marks

20. A pail holds 2.45 ℓ of water. Express this amount as a mixed number of litres in its simplest form.2 marks

21. A number with 2 decimal places is rounded to 1 decimal place and the answer is 5.3. What are the smallest and the greatest numbers it could be?2 marks

22. Mei has three ribbons. The red ribbon is 2.35 m long, the blue ribbon is 2 925 m long and the green ribbon is 2.4 m long. Arrange the ribbons in order, from the shortest to the longest.2 marks

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