Math 8 · Unit 4: Decimals · Cambridge Lower Secondary Maths Stage 8

Questions

1. 1. 2.4 × 0.35 = ?

   • 84
   • 0.84
   • 8.4
   • 0.084
   Check

2. 2. 0.6 × 0.7 = ?

   • 0.042
   • 4.2
   • 0.42
   • 1.3
   Check

3. 3. 3.5 × 1.2 = ?

   • 3.7
   • 4.2
   • 42
   • 0.42
   Check

4. 4. 0.04 × 0.3 = ?

   • 0.012
   • 1.2
   • 0.12
   • 0.0012
   Check

5. 5. Estimate 4.92 × 3.1.

   • 12
   • 20
   • 150
   • 15
   Check

6. 6. 1.25 × 0.8 = ?

   • 1.33
   • 0.1
   • 1
   • 10
   Check

7. 7. Fabric costs $4.60 per metre. How much for 2.5 m?

   • $11.05
   • $11.50
   • $9.20
   • $115.00
   Check

8. 8. 0.9 × 0.9 = ?

   • 8.1
   • 0.081
   • 1.8
   • 0.81
   Check

9. 9. Multiplying a positive number by 0.8 makes it …

   • the same
   • negative
   • bigger
   • smaller
   Check

10. 10. 2.3 × 0.05 = ?

    • 11.5
    • 0.0115
    • 0.115
    • 1.15
    Check

11. 11. A room is 3.2 m by 4.5 m. What is its area?

    • 14.4 m²
    • 144 m²
    • 1.44 m²
    • 7.7 m²
    Check

12. 12. (0.2)² = ?

    • 4
    • 0.04
    • 0.004
    • 0.4
    Check

13. 13. Given 17 × 23 = 391, what is 1.7 × 2.3?

    • 39.1
    • 391
    • 0.391
    • 3.91
    Check

14. 14. Given 17 × 23 = 391, what is 0.17 × 23?

    • 391
    • 39.1
    • 3.91
    • 0.391
    Check

15. 15. 6 × 0.125 = ?

    • 6.125
    • 7.5
    • 0.75
    • 0.075
    Check