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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 500 · 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. 1.1/5 × 6 =
  2. 2.6 ÷ 0.5 =
  3. 3.7/9 × 12 =
  4. 4.1 ÷ 0.5 =
  5. 5.7.1 × 0.9 =
  6. 6.7/8 ÷ 5/6 =
  7. 7.2/3 × 8 =
  8. 8.5/7 × 8 =
  9. 9.1.4 ÷ 0.2 =
  10. 10.1/6 × 2/7 =
  11. 11.5.1 × 0.5 =
  12. 12.11.86 ÷ 2 =
  13. 13.2/9 ÷ 2/7 =
  14. 14.1.3 × 0.3 =
  15. 15.1/4 × 8 =
  16. 16.1/9 × 2 =
  17. 17.1/3 ÷ 5/6 =
  18. 18.5.8 × 0.9 =
  19. 19.8/9 × 1/5 =
  20. 20.3/5 × 10 =
  21. 21.10.8 ÷ 0.9 =
  22. 22.One packet of rice weighs 5.2 kg. How many kg do 4 of them make in all? =
  23. 23.7/8 ÷ 7/9 =
  24. 24.One bag of potatoes weighs 3.6 kg. How many kg do 5 of them make in all? =
  25. 25.7.8 × 0.7 =
  26. 26.32.16 ÷ 4 =
  27. 27.44.64 ÷ 8 =
  28. 28.1.6 ÷ 0.2 =
  29. 29.One jug of milk holds 1.6 L. How many L do 12 of them make in all? =
  30. 30.3/4 × 5 =
  31. 31.1/6 × 1/2 =
  32. 32.One packet of rice weighs 6.4 kg. How many kg do 6 of them make in all? =
  33. 33.1/6 × 3/4 =
  34. 34.21.1 ÷ 5 =
  35. 35.One bag of potatoes weighs 1.4 kg. How many kg do 10 of them make in all? =
  36. 36.One bottle of oil holds 1.7 L. How many L do 4 of them make in all? =
  37. 37.8/9 ÷ 2/5 =
  38. 38.1.6 ÷ 0.4 =
  39. 39.7/8 ÷ 2/7 =
  40. 40.1.3 × 0.8 =

Answer key

  1. 6/5
  2. 12
  3. 28/3
  4. 2
  5. 6.39
  6. 21/20
  7. 16/3
  8. 40/7
  9. 7
  10. 1/21
  11. 2.55
  12. 5.93
  13. 7/9
  14. 0.39
  15. 2
  16. 2/9
  17. 2/5
  18. 5.22
  19. 8/45
  20. 6
  21. 12
  22. 20.8
  23. 9/8
  24. 18
  25. 5.46
  26. 8.04
  27. 5.58
  28. 8
  29. 19.2
  30. 15/4
  31. 1/12
  32. 38.4
  33. 1/8
  34. 4.22
  35. 14
  36. 6.8
  37. 20/9
  38. 4
  39. 49/16
  40. 1.04

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