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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 120 · 40 sums
TalentJR

The method (Flip and multiply): a/b × c/d = (a × c)/(b × d), then simplify. A whole number n is n/1. a/b ÷ c/d = a/b × d/c. Decimal × decimal: multiply as whole numbers; the answer has as many decimal places as both numbers together — 1.2 × 0.3 = 0.36. Decimal ÷ decimal: multiply both by 10 (or 100) first — 2.4 ÷ 0.6 = 24 ÷ 6 = 4.

NameDateTime takenScore ___ / 40
  1. 1.1/7 × 4 =
  2. 2.7.2 ÷ 0.6 =
  3. 3.1/5 ÷ 1/4 =
  4. 4.3/5 ÷ 1/5 =
  5. 5.3/8 ÷ 8/9 =
  6. 6.3/5 ÷ 4/7 =
  7. 7.One bottle of oil holds 3.6 L. How many L do 12 of them make in all? =
  8. 8.0.3 × 0.2 =
  9. 9.0.8 ÷ 0.2 =
  10. 10.2/7 × 7 =
  11. 11.One bag of potatoes weighs 9.1 kg. How many kg do 2 of them make in all? =
  12. 12.2/5 × 9 =
  13. 13.One bag of potatoes weighs 7.7 kg. How many kg do 7 of them make in all? =
  14. 14.One roll of ribbon has 4.5 m. How many m do 3 of them make in all? =
  15. 15.1/2 × 8 =
  16. 16.3.2 ÷ 0.8 =
  17. 17.2.4 ÷ 0.8 =
  18. 18.8.2 × 0.4 =
  19. 19.8/9 × 1/2 =
  20. 20.1.1 × 0.3 =
  21. 21.1/9 × 6/7 =
  22. 22.2 ÷ 2 =
  23. 23.1/5 × 10 =
  24. 24.1/4 ÷ 1/6 =
  25. 25.6.4 ÷ 0.8 =
  26. 26.One packet of rice weighs 6.2 kg. How many kg do 2 of them make in all? =
  27. 27.0.6 ÷ 0.2 =
  28. 28.45.6 ÷ 8 =
  29. 29.7/8 × 15 =
  30. 30.8/9 ÷ 1/3 =
  31. 31.1.52 ÷ 2 =
  32. 32.9.5 × 0.4 =
  33. 33.2.4 ÷ 0.4 =
  34. 34.1/8 × 3/4 =
  35. 35.1/3 ÷ 1/4 =
  36. 36.0.7 × 0.7 =
  37. 37.1.7 × 0.8 =
  38. 38.5.3 × 0.2 =
  39. 39.2.4 × 0.9 =
  40. 40.2/9 ÷ 4/7 =

Answer key

  1. 4/7
  2. 12
  3. 4/5
  4. 3
  5. 27/64
  6. 21/20
  7. 43.2
  8. 0.06
  9. 4
  10. 2
  11. 18.2
  12. 18/5
  13. 53.9
  14. 13.5
  15. 4
  16. 4
  17. 3
  18. 3.28
  19. 4/9
  20. 0.33
  21. 2/21
  22. 1
  23. 2
  24. 3/2
  25. 8
  26. 12.4
  27. 3
  28. 5.7
  29. 105/8
  30. 8/3
  31. 0.76
  32. 3.8
  33. 6
  34. 3/32
  35. 4/3
  36. 0.49
  37. 1.36
  38. 1.06
  39. 2.16
  40. 7/18

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