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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 398 · 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. 1.1/4 × 6 =
  2. 2.3/8 × 13 =
  3. 3.1/8 × 1/2 =
  4. 4.6/7 × 4/9 =
  5. 5.4/5 × 1/9 =
  6. 6.71.44 ÷ 8 =
  7. 7.5.5 × 0.2 =
  8. 8.5.5 × 0.9 =
  9. 9.One bag of potatoes weighs 6.2 kg. How many kg do 5 of them make in all? =
  10. 10.15.4 ÷ 4 =
  11. 11.One bag of potatoes weighs 5.6 kg. How many kg do 3 of them make in all? =
  12. 12.4.3 ÷ 2 =
  13. 13.2/3 × 2/3 =
  14. 14.0.8 ÷ 0.4 =
  15. 15.1.8 ÷ 0.9 =
  16. 16.One roll of ribbon has 3.2 m. How many m do 5 of them make in all? =
  17. 17.9.88 ÷ 2 =
  18. 18.3/4 × 5 =
  19. 19.One bag of potatoes weighs 1.9 kg. How many kg do 5 of them make in all? =
  20. 20.7/9 × 14 =
  21. 21.1/5 × 5 =
  22. 22.6.9 ÷ 2 =
  23. 23.6.4 ÷ 0.8 =
  24. 24.0.6 × 0.4 =
  25. 25.4.2 × 0.9 =
  26. 26.4.8 ÷ 5 =
  27. 27.One roll of ribbon has 1.2 m. How many m do 11 of them make in all? =
  28. 28.3/4 × 7/9 =
  29. 29.One roll of ribbon has 9.8 m. How many m do 8 of them make in all? =
  30. 30.2/3 × 14 =
  31. 31.1/8 × 2 =
  32. 32.1/3 × 5/7 =
  33. 33.1/2 × 4/9 =
  34. 34.1/3 ÷ 3/8 =
  35. 35.1/4 ÷ 7/9 =
  36. 36.3/4 ÷ 4/7 =
  37. 37.4/5 × 3/5 =
  38. 38.7/9 × 4/5 =
  39. 39.4/7 × 12 =
  40. 40.3/7 × 4/7 =

Answer key

  1. 3/2
  2. 39/8
  3. 1/16
  4. 8/21
  5. 4/45
  6. 8.93
  7. 1.1
  8. 4.95
  9. 31
  10. 3.85
  11. 16.8
  12. 2.15
  13. 4/9
  14. 2
  15. 2
  16. 16
  17. 4.94
  18. 15/4
  19. 9.5
  20. 98/9
  21. 1
  22. 3.45
  23. 8
  24. 0.24
  25. 3.78
  26. 0.96
  27. 13.2
  28. 7/12
  29. 78.4
  30. 28/3
  31. 1/4
  32. 5/21
  33. 2/9
  34. 8/9
  35. 9/28
  36. 21/16
  37. 12/25
  38. 28/45
  39. 48/7
  40. 12/49

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