N15 round numbers and measures to an appropriate degree of accuracy (e.g. to a specified... Quiz: Pearson Edexcel Maths, Unit 1

The 20 questions

1. Round 3.4671 to 2 decimal places.

   • 3.46
   • 3.5
   • 3.4671
   • 3.47

2. Round 0.04582 to 2 significant figures.

   • 0.046
   • 0.04
   • 0.05
   • 0.0458

3. Round 7250 to 2 significant figures.

   • 7300
   • 7200
   • 7000
   • 7250

4. Truncate 8.7396 to 2 decimal places.

   • 8.73
   • 8.8
   • 8.74
   • 8.7

5. A length is 6.5 cm to 1 decimal place. Which inequality gives its error interval?

   • 6.4 ≤ L < 6.5
   • 6.05 ≤ L < 6.55
   • 6.5 ≤ L < 6.6
   • 6.45 ≤ L < 6.55

6. A mass is 4.20 kg to 2 decimal places. Which error interval is correct?

   • 4.195 ≤ m < 4.205
   • 4.2 ≤ m < 4.3
   • 4.20 ≤ m < 4.21
   • 4.19 ≤ m < 4.20

7. Round 0.0074921 to 3 significant figures.

   • 0.0075
   • 0.0074
   • 0.00749
   • 0.007

8. Round 0.6038 to 3 decimal places.

   • 0.604
   • 0.6
   • 0.603
   • 0.6038

9. Round 46 250 to 2 significant figures and give the answer in standard form.

   • 4.625 × 10⁴
   • 4.63 × 10⁴
   • 4.6 × 10⁴
   • 4.7 × 10⁴

10. Round 2.054 to 2 decimal places.

    • 2.1
    • 2.06
    • 2.05
    • 2.054

11. A number is truncated to 1 decimal place to give 7.3. Which inequality describes the possible values of x?

    • 7.3 ≤ x < 7.4
    • 7.25 ≤ x < 7.35
    • 7.3 ≤ x < 7.35
    • 7.25 ≤ x < 7.4

12. Which number has 4 significant figures?

    • 4000
    • 4 × 10³
    • 0.0040
    • 40.04

13. A distance of 1500 m is given to 2 significant figures. Which inequality gives the error interval?

    • 1400 ≤ d < 1600
    • 1495 ≤ d < 1505
    • 1500 ≤ d < 1510
    • 1450 ≤ d < 1550

14. Calculate 3.4 × 2.1 and round the answer to 1 significant figure.

    • 8
    • 7
    • 6
    • 7.1

15. Which number rounds to 6.8 when given to 1 decimal place?

    • 6.9
    • 6.84
    • 6.74
    • 6.85

16. A rectangle has sides 4.5 cm and 3.0 cm, each given to 1 decimal place. What is the lower bound of its area to 2 decimal places?

    • 13.5 cm²
    • 13.1 cm²
    • 12.0 cm²
    • 13.13 cm²

17. Round 0.0009987 to 3 significant figures.

    • 0.00099
    • 0.0010
    • 0.001
    • 0.00100

18. Round 0.06047 to 3 significant figures.

    • 0.060
    • 0.06
    • 0.0605
    • 0.0604

19. A bag of sugar is 1.5 kg to 1 decimal place. What is its upper bound in grams?

    • 1500 g
    • 1549 g
    • 1550 g
    • 1560 g

20. Which statement about rounding 2.345 to 2 decimal places is correct?

    • 2.345
    • 2.35
    • 2.3
    • 2.34

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