N15 Rounding to a degree of accuracy and error intervals Quiz: AQA Maths, Unit 1

The 20 questions

1. Round 3.4762 to 2 decimal places.

   • 3.48
   • 3.4
   • 3.47
   • 3.476

2. Round 0.007652 to 2 significant figures.

   • 0.0076
   • 0.00765
   • 0.0077
   • 0.008

3. Round 58 390 to 1 significant figure.

   • 58 000
   • 50 000
   • 58 400
   • 60 000

4. Round 2.4951 to 3 significant figures.

   • 2.50
   • 2.4
   • 2.495
   • 2.49

5. A length is 6.3 cm to 1 decimal place. Which is the error interval?

   • 6.2 ≤ length < 6.3
   • 6.25 < length ≤ 6.35
   • 6.3 ≤ length < 6.4
   • 6.25 ≤ length < 6.35

6. A mass is 4.7 kg when truncated to 1 decimal place. Which is the interval?

   • 4.6 ≤ mass < 4.7
   • 4.7 ≤ mass < 4.8
   • 4.65 ≤ mass < 4.75
   • 4.7 < mass ≤ 4.8

7. Round 0.0467 to 1 significant figure.

   • 0.5
   • 0.05
   • 0.04
   • 0.047

8. A rope is 12 m long to the nearest metre. What is its smallest possible length?

   • 11.9 m
   • 12.4 m
   • 11 m
   • 11.5 m

9. A time is 5.4 s to 1 decimal place. What is the upper bound?

   • 5.5 s
   • 5.45 s
   • 5.35 s
   • 5.4 s

10. Round 4.5 to the nearest whole number.

    • 4
    • 6
    • 4.5
    • 5

11. Round 1.0049 to 3 decimal places.

    • 1.004
    • 1.005
    • 1.0049
    • 1.01

12. A value rounds to 800 to 2 significant figures. Which value is possible?

    • 850
    • 750
    • 795
    • 784

13. A parcel weighs 1.7 kg to the nearest 0.1 kg. What is its lower bound?

    • 1.75 kg
    • 1.7 kg
    • 1.6 kg
    • 1.65 kg

14. A number rounds to 4.6 to 1 decimal place. Which number could it be?

    • 4.7
    • 4.62
    • 4.66
    • 4.2

15. Round 0.00000628 to 2 significant figures.

    • 0.0000062
    • 0.0000063
    • 0.000006
    • 0.00000628

16. A time is 7 minutes to the nearest minute. What is the greatest possible time?

    • 7.4 minutes
    • 7.05 minutes
    • 7.5 minutes
    • 8 minutes

17. A length is 3.2 cm when truncated to 1 decimal place. Which interval is correct?

    • 3.2 ≤ length < 3.3
    • 3.15 ≤ length < 3.25
    • 3.25 ≤ length < 3.35
    • 3.1 ≤ length < 3.2

18. Which number rounds to 60 to 1 significant figure?

    • 55
    • 45
    • 49
    • 54.9

19. Round 9.996 to 2 decimal places.

    • 9.90
    • 9.99
    • 10.00
    • 10.99

20. A race time is 13.4 s to 1 decimal place. Which true time is possible?

    • 13.45 s
    • 13.24 s
    • 13.36 s
    • 13.5 s

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