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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 117 · 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. 1.4.8 ÷ 0.8 =
  2. 2.1/4 × 12 =
  3. 3.One bottle of oil holds 8 L. How many L do 8 of them make in all? =
  4. 4.4.1 × 0.3 =
  5. 5.One packet of rice weighs 1.2 kg. How many kg do 11 of them make in all? =
  6. 6.9.4 × 0.5 =
  7. 7.One jug of milk holds 6.3 L. How many L do 5 of them make in all? =
  8. 8.4/9 × 1/3 =
  9. 9.4/9 × 2/5 =
  10. 10.4/5 × 5 =
  11. 11.2/3 ÷ 3/5 =
  12. 12.1/6 × 4 =
  13. 13.6 ÷ 0.5 =
  14. 14.One roll of ribbon has 2.1 m. How many m do 4 of them make in all? =
  15. 15.2.4 ÷ 0.6 =
  16. 16.One bag of potatoes weighs 5.1 kg. How many kg do 12 of them make in all? =
  17. 17.9.1 × 0.2 =
  18. 18.3/7 ÷ 7/8 =
  19. 19.2.8 × 0.9 =
  20. 20.2/5 × 13 =
  21. 21.1/2 × 1/9 =
  22. 22.One bottle of oil holds 1.7 L. How many L do 11 of them make in all? =
  23. 23.1/3 ÷ 7/9 =
  24. 24.2.9 × 0.6 =
  25. 25.9.8 × 0.3 =
  26. 26.One roll of ribbon has 6.4 m. How many m do 6 of them make in all? =
  27. 27.8.92 ÷ 4 =
  28. 28.8/9 × 3 =
  29. 29.5/8 × 9 =
  30. 30.2.8 ÷ 0.4 =
  31. 31.5/7 ÷ 7/9 =
  32. 32.4 ÷ 0.4 =
  33. 33.One jug of milk holds 2.7 L. How many L do 9 of them make in all? =
  34. 34.3.9 × 0.8 =
  35. 35.5/9 ÷ 5/8 =
  36. 36.One bottle of oil holds 9.7 L. How many L do 3 of them make in all? =
  37. 37.4/5 × 10 =
  38. 38.2.3 × 0.2 =
  39. 39.0.1 × 0.3 =
  40. 40.0.9 × 0.3 =

Answer key

  1. 6
  2. 3
  3. 64
  4. 1.23
  5. 13.2
  6. 4.7
  7. 31.5
  8. 4/27
  9. 8/45
  10. 4
  11. 10/9
  12. 2/3
  13. 12
  14. 8.4
  15. 4
  16. 61.2
  17. 1.82
  18. 24/49
  19. 2.52
  20. 26/5
  21. 1/18
  22. 18.7
  23. 3/7
  24. 1.74
  25. 2.94
  26. 38.4
  27. 2.23
  28. 8/3
  29. 45/8
  30. 7
  31. 45/49
  32. 10
  33. 24.3
  34. 3.12
  35. 8/9
  36. 29.1
  37. 8
  38. 0.46
  39. 0.03
  40. 0.27

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