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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 459 · 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. 1.1/8 × 4/5 =
  2. 2.3/7 × 4 =
  3. 3.One roll of ribbon has 1.8 m. How many m do 6 of them make in all? =
  4. 4.6.4 ÷ 0.8 =
  5. 5.5/8 × 1/5 =
  6. 6.One bag of potatoes weighs 1.9 kg. How many kg do 7 of them make in all? =
  7. 7.2/9 ÷ 1/5 =
  8. 8.3/8 × 2/7 =
  9. 9.4 ÷ 0.5 =
  10. 10.1/7 ÷ 5/7 =
  11. 11.0.8 ÷ 0.2 =
  12. 12.2.2 × 0.9 =
  13. 13.78.4 ÷ 8 =
  14. 14.3.7 × 0.4 =
  15. 15.One bottle of oil holds 2.7 L. How many L do 6 of them make in all? =
  16. 16.3/8 ÷ 3/5 =
  17. 17.3.5 ÷ 0.7 =
  18. 18.2 ÷ 0.5 =
  19. 19.One packet of rice weighs 8.3 kg. How many kg do 11 of them make in all? =
  20. 20.38.44 ÷ 4 =
  21. 21.3/4 ÷ 1/7 =
  22. 22.6.1 × 0.4 =
  23. 23.One roll of ribbon has 5.4 m. How many m do 5 of them make in all? =
  24. 24.2.2 ÷ 0.2 =
  25. 25.1/4 × 2 =
  26. 26.3/5 ÷ 3/4 =
  27. 27.One bottle of oil holds 7.3 L. How many L do 9 of them make in all? =
  28. 28.1/5 × 4/7 =
  29. 29.8.8 × 0.6 =
  30. 30.39.36 ÷ 8 =
  31. 31.42.08 ÷ 8 =
  32. 32.4/9 × 3 =
  33. 33.2.4 ÷ 0.2 =
  34. 34.0.1 × 0.2 =
  35. 35.1/9 × 1/9 =
  36. 36.2.9 × 0.3 =
  37. 37.5/9 × 2/7 =
  38. 38.1.02 ÷ 2 =
  39. 39.2/9 × 1/9 =
  40. 40.5/6 × 8/9 =

Answer key

  1. 1/10
  2. 12/7
  3. 10.8
  4. 8
  5. 1/8
  6. 13.3
  7. 10/9
  8. 3/28
  9. 8
  10. 1/5
  11. 4
  12. 1.98
  13. 9.8
  14. 1.48
  15. 16.2
  16. 5/8
  17. 5
  18. 4
  19. 91.3
  20. 9.61
  21. 21/4
  22. 2.44
  23. 27
  24. 11
  25. 1/2
  26. 4/5
  27. 65.7
  28. 4/35
  29. 5.28
  30. 4.92
  31. 5.26
  32. 4/3
  33. 12
  34. 0.02
  35. 1/81
  36. 0.87
  37. 10/63
  38. 0.51
  39. 2/81
  40. 20/27

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