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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 371 · 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.One bag of potatoes weighs 2.7 kg. How many kg do 8 of them make in all? =
  2. 2.1/3 × 3/4 =
  3. 3.0.2 × 0.8 =
  4. 4.4/9 × 4/7 =
  5. 5.5/7 ÷ 5/7 =
  6. 6.4/9 × 13 =
  7. 7.4/7 × 3/5 =
  8. 8.One bag of potatoes weighs 5.8 kg. How many kg do 4 of them make in all? =
  9. 9.1/5 ÷ 6/7 =
  10. 10.7/9 × 5/8 =
  11. 11.77.28 ÷ 8 =
  12. 12.6.3 ÷ 0.7 =
  13. 13.4/5 × 15 =
  14. 14.4/9 × 4 =
  15. 15.One roll of ribbon has 3.2 m. How many m do 5 of them make in all? =
  16. 16.4.1 × 0.4 =
  17. 17.5.3 × 0.7 =
  18. 18.3.5 ÷ 0.7 =
  19. 19.4.5 ÷ 0.9 =
  20. 20.3/7 × 1/3 =
  21. 21.2/3 × 8 =
  22. 22.1/4 ÷ 5/6 =
  23. 23.One bottle of oil holds 6 L. How many L do 5 of them make in all? =
  24. 24.1.7 × 0.3 =
  25. 25.2/3 × 13 =
  26. 26.3/8 × 5 =
  27. 27.4/9 × 1/8 =
  28. 28.4/5 × 7/8 =
  29. 29.One bottle of oil holds 8.5 L. How many L do 4 of them make in all? =
  30. 30.One bottle of oil holds 8.2 L. How many L do 11 of them make in all? =
  31. 31.4.8 ÷ 0.4 =
  32. 32.3/7 × 13 =
  33. 33.3.1 × 0.3 =
  34. 34.One jug of milk holds 9.7 L. How many L do 9 of them make in all? =
  35. 35.1/5 ÷ 4/9 =
  36. 36.5/7 × 5/8 =
  37. 37.2/5 × 10 =
  38. 38.3/4 × 11 =
  39. 39.5/8 ÷ 4/5 =
  40. 40.One packet of rice weighs 3.5 kg. How many kg do 5 of them make in all? =

Answer key

  1. 21.6
  2. 1/4
  3. 0.16
  4. 16/63
  5. 1
  6. 52/9
  7. 12/35
  8. 23.2
  9. 7/30
  10. 35/72
  11. 9.66
  12. 9
  13. 12
  14. 16/9
  15. 16
  16. 1.64
  17. 3.71
  18. 5
  19. 5
  20. 1/7
  21. 16/3
  22. 3/10
  23. 30
  24. 0.51
  25. 26/3
  26. 15/8
  27. 1/18
  28. 7/10
  29. 34
  30. 90.2
  31. 12
  32. 39/7
  33. 0.93
  34. 87.3
  35. 9/20
  36. 25/56
  37. 4
  38. 33/4
  39. 25/32
  40. 17.5

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