Math 8 · Unit 3: Place value and rounding · Cambridge Lower Secondary Maths Stage 8

Questions

1. 1. Round 3482 to 2 significant figures.

   • 3400
   • 3500
   • 35
   • 3480
   Check

2. 2. Round 0.04768 to 2 significant figures.

   • 0.04
   • 0.05
   • 0.047
   • 0.048
   Check

3. 3. Round 6.0749 to 2 decimal places.

   • 6.075
   • 6.07
   • 6.08
   • 6.1
   Check

4. 4. Round 52 736 to 1 significant figure.

   • 53 000
   • 5
   • 50 000
   • 60 000
   Check

5. 5. Round 12.996 to 2 decimal places.

   • 12.99
   • 12.10
   • 13.0
   • 13.00
   Check

6. 6. Round 0.00391 to 1 significant figure.

   • 0.01
   • 0.0039
   • 0.003
   • 0.004
   Check

7. 7. Estimate 49.7 × 3.08 to 1 s.f.

   • 200
   • 120
   • 160
   • 150
   Check

8. 8. How many significant figures in 0.0560?

   • 2
   • 5
   • 3
   • 4
   Check

9. 9. Round 7.35 to 1 decimal place.

   • 7.4
   • 7.5
   • 7.3
   • 7
   Check

10. 10. Round 849 to 1 significant figure.

    • 8
    • 850
    • 800
    • 900
    Check

11. 11. Estimate 396 ÷ 19.

    • 15
    • 40
    • 2
    • 20
    Check

12. 12. Round 2.0451 to 3 significant figures.

    • 2.045
    • 2.04
    • 2.05
    • 2.1
    Check

13. 13. Round 0.7 to the nearest whole number.

    • 1
    • 0
    • 7
    • 0.7
    Check

14. 14. A crowd of 23 846 is reported to 2 s.f. as …

    • 24 000
    • 23 000
    • 20 000
    • 23 800
    Check

15. 15. Estimate (8.9 + 3.2) × 4.9.

    • 50
    • 60
    • 45
    • 80
    Check