Math 7 · Unit 10: Percentages · Cambridge Lower Secondary Maths Stage 7

Questions

1. 1. Write these percentages as fractions, in their simplest form. 0.1%

   • 1/10000
   • 1/100
   • 1/10
   • 1/1000
   Check

2. 2. Write these percentages as fractions, in their simplest form. 0.2%

   • 1/200
   • 1/5
   • 1/50
   • 1/500
   Check

3. 3. Write these percentages as fractions, in their simplest form. 0.3%

   • 3/100
   • 3/1000
   • 3/10
   • 3/10000
   Check

4. 4. Write these percentages as fractions, in their simplest form. 0.4%

   • 1/250
   • 1/2500
   • 1/25
   • 1/40
   Check

5. 5. Write these percentages as fractions, in their simplest form. 0.5%

   • 1/2000
   • 1/20
   • 1/2
   • 1/200
   Check

6. 6. Work out: 80% of $45

   • $3.60
   • $36
   • $0.36
   • $360
   Check

7. 7. Work out: 8% of $45

   • $36
   • $0.36
   • $3.60
   • $360
   Check

8. 8. Work out: 0.8% of $45

   • $36
   • $0.36
   • $3.60
   • $0.036
   Check

9. 9. Question 3a: work out 1% of 240.

   • 240
   • 24
   • 2.4
   • 0.24
   Check

10. 10. Use 1% of 240 = 2.4 to work out: i 0.5% of 240, ii 0.1% of 240, iii 0.2% of 240.

    • i 1.2, ii 0.48, iii 0.24
    • i 12, ii 2.4, iii 4.8
    • i 1.2, ii 0.24, iii 0.48
    • i 0.12, ii 0.024, iii 0.048
    Check

11. 11. Write each percentage as a fraction, in its simplest form. 2.5%

    • 1/4
    • 2/5
    • 1/40
    • 1/400
    Check

12. 12. Write each percentage as a fraction, in its simplest form. 7.5%

    • 3/400
    • 3/20
    • 3/40
    • 3/4
    Check

13. 13. Write each percentage as a fraction, in its simplest form. 12.5%

    • 1/5
    • 5/8
    • 1/80
    • 1/8
    Check

14. 14. Write each percentage as a fraction, in its simplest form. 17.5%

    • 7/20
    • 7/40
    • 7/4
    • 7/400
    Check

15. 15. Work out the percentage of $200 of the following amounts. $40

    • 20%
    • 40%
    • 5%
    • 200%
    Check

16. 16. Work out the percentage of $200 of the following amounts. $112

    • 56%
    • 5.6%
    • 44%
    • 112%
    Check

17. 17. Work out the percentage of $200 of the following amounts. $185

    • 92.5%
    • 82.5%
    • 185%
    • 9.25%
    Check

18. 18. Is this statement possible? The price of an apartment increases by 120%.

    • Yes
    • No
    Check

19. 19. Is this statement possible? The population of a town decreases by 120%.

    • Yes
    • No
    Check

20. 20. Is this statement possible? My salary is 120% of my brother's salary.

    • Yes
    • No
    Check