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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 70 · 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. 1.6/7 × 3/4 =
  2. 2.3/4 × 4/9 =
  3. 3.3/7 × 14 =
  4. 4.7/9 × 5/6 =
  5. 5.5/7 × 6 =
  6. 6.1/6 × 2/3 =
  7. 7.7.78 ÷ 2 =
  8. 8.3 ÷ 0.3 =
  9. 9.4/7 × 1/9 =
  10. 10.1/3 × 5 =
  11. 11.One bag of potatoes weighs 1.5 kg. How many kg do 5 of them make in all? =
  12. 12.4/7 × 13 =
  13. 13.5.04 ÷ 8 =
  14. 14.4.4 × 0.2 =
  15. 15.1/5 × 1/8 =
  16. 16.One roll of ribbon has 3.6 m. How many m do 9 of them make in all? =
  17. 17.1.14 ÷ 2 =
  18. 18.5/8 × 4/7 =
  19. 19.4/9 ÷ 4/7 =
  20. 20.24.08 ÷ 4 =
  21. 21.14.64 ÷ 4 =
  22. 22.2/7 × 3/8 =
  23. 23.7/9 × 6 =
  24. 24.7.3 × 0.3 =
  25. 25.1/8 × 4/7 =
  26. 26.13 ÷ 4 =
  27. 27.9.2 × 0.9 =
  28. 28.One bottle of oil holds 7.4 L. How many L do 10 of them make in all? =
  29. 29.1/5 ÷ 8/9 =
  30. 30.45.2 ÷ 8 =
  31. 31.5/9 ÷ 2/5 =
  32. 32.6/7 × 4/7 =
  33. 33.1/4 × 1/5 =
  34. 34.2/5 × 10 =
  35. 35.One packet of rice weighs 4.1 kg. How many kg do 3 of them make in all? =
  36. 36.1 ÷ 0.2 =
  37. 37.3/4 × 4 =
  38. 38.One packet of rice weighs 9.8 kg. How many kg do 7 of them make in all? =
  39. 39.7.3 × 0.2 =
  40. 40.2/3 × 11 =

Answer key

  1. 9/14
  2. 1/3
  3. 6
  4. 35/54
  5. 30/7
  6. 1/9
  7. 3.89
  8. 10
  9. 4/63
  10. 5/3
  11. 7.5
  12. 52/7
  13. 0.63
  14. 0.88
  15. 1/40
  16. 32.4
  17. 0.57
  18. 5/14
  19. 7/9
  20. 6.02
  21. 3.66
  22. 3/28
  23. 14/3
  24. 2.19
  25. 1/14
  26. 3.25
  27. 8.28
  28. 74
  29. 9/40
  30. 5.65
  31. 25/18
  32. 24/49
  33. 1/20
  34. 4
  35. 12.3
  36. 5
  37. 3
  38. 68.6
  39. 1.46
  40. 22/3

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