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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 274 · 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. 1.18.46 ÷ 2 =
  2. 2.14.96 ÷ 4 =
  3. 3.One packet of rice weighs 1.5 kg. How many kg do 12 of them make in all? =
  4. 4.1/7 × 15 =
  5. 5.1/5 ÷ 3/5 =
  6. 6.One roll of ribbon has 4.9 m. How many m do 11 of them make in all? =
  7. 7.1/5 × 13 =
  8. 8.1/5 × 5 =
  9. 9.3.6 ÷ 0.3 =
  10. 10.2/5 ÷ 2/3 =
  11. 11.12.88 ÷ 8 =
  12. 12.One roll of ribbon has 6 m. How many m do 12 of them make in all? =
  13. 13.4.2 ÷ 2 =
  14. 14.One roll of ribbon has 1.7 m. How many m do 12 of them make in all? =
  15. 15.8/9 × 2/5 =
  16. 16.31.7 ÷ 5 =
  17. 17.5.7 × 0.8 =
  18. 18.1/9 × 2 =
  19. 19.One packet of rice weighs 7.2 kg. How many kg do 4 of them make in all? =
  20. 20.3/5 ÷ 1/3 =
  21. 21.3 ÷ 0.6 =
  22. 22.1.2 ÷ 0.3 =
  23. 23.6.7 × 0.2 =
  24. 24.3/5 × 7 =
  25. 25.5.9 × 0.3 =
  26. 26.1/9 × 7 =
  27. 27.3/5 × 3/5 =
  28. 28.3.6 ÷ 0.4 =
  29. 29.7/9 ÷ 5/6 =
  30. 30.1/4 × 14 =
  31. 31.5/8 × 4/9 =
  32. 32.8/9 ÷ 2/5 =
  33. 33.1/2 × 9 =
  34. 34.One jug of milk holds 6.6 L. How many L do 5 of them make in all? =
  35. 35.1/8 ÷ 1/4 =
  36. 36.30.2 ÷ 4 =
  37. 37.2 ÷ 0.2 =
  38. 38.One bottle of oil holds 5.2 L. How many L do 3 of them make in all? =
  39. 39.One jug of milk holds 2 L. How many L do 4 of them make in all? =
  40. 40.2.3 × 0.4 =

Answer key

  1. 9.23
  2. 3.74
  3. 18
  4. 15/7
  5. 1/3
  6. 53.9
  7. 13/5
  8. 1
  9. 12
  10. 3/5
  11. 1.61
  12. 72
  13. 2.1
  14. 20.4
  15. 16/45
  16. 6.34
  17. 4.56
  18. 2/9
  19. 28.8
  20. 9/5
  21. 5
  22. 4
  23. 1.34
  24. 21/5
  25. 1.77
  26. 7/9
  27. 9/25
  28. 9
  29. 14/15
  30. 7/2
  31. 5/18
  32. 20/9
  33. 9/2
  34. 33
  35. 1/2
  36. 7.55
  37. 10
  38. 15.6
  39. 8
  40. 0.92

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