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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 183 · 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. 1.3/8 ÷ 2/3 =
  2. 2.1/9 ÷ 4/7 =
  3. 3.One bottle of oil holds 3.5 L. How many L do 11 of them make in all? =
  4. 4.11.08 ÷ 2 =
  5. 5.2/3 ÷ 5/9 =
  6. 6.6.3 ÷ 0.9 =
  7. 7.49.9 ÷ 5 =
  8. 8.3/5 × 15 =
  9. 9.3.6 ÷ 0.4 =
  10. 10.1/6 × 5 =
  11. 11.3.8 × 0.6 =
  12. 12.3/5 × 2/3 =
  13. 13.4/5 × 2 =
  14. 14.3.6 ÷ 0.3 =
  15. 15.1/3 × 3/5 =
  16. 16.One packet of rice weighs 2.5 kg. How many kg do 11 of them make in all? =
  17. 17.1/2 × 10 =
  18. 18.1.6 ÷ 0.4 =
  19. 19.1/6 × 1/9 =
  20. 20.One packet of rice weighs 8.5 kg. How many kg do 9 of them make in all? =
  21. 21.3.2 ÷ 0.4 =
  22. 22.One roll of ribbon has 4.5 m. How many m do 7 of them make in all? =
  23. 23.20.8 ÷ 8 =
  24. 24.One jug of milk holds 5.9 L. How many L do 10 of them make in all? =
  25. 25.5/8 ÷ 4/9 =
  26. 26.One packet of rice weighs 5.6 kg. How many kg do 4 of them make in all? =
  27. 27.2/5 × 7/9 =
  28. 28.1/4 × 2 =
  29. 29.2/5 × 9 =
  30. 30.3/4 × 6 =
  31. 31.8/9 × 6/7 =
  32. 32.1.6 × 0.6 =
  33. 33.1/5 × 7 =
  34. 34.One roll of ribbon has 4.4 m. How many m do 6 of them make in all? =
  35. 35.5/6 × 5/9 =
  36. 36.1/4 × 7 =
  37. 37.One bag of potatoes weighs 3.4 kg. How many kg do 11 of them make in all? =
  38. 38.5.7 × 0.6 =
  39. 39.4/7 × 1/9 =
  40. 40.4/7 × 3/4 =

Answer key

  1. 9/16
  2. 7/36
  3. 38.5
  4. 5.54
  5. 6/5
  6. 7
  7. 9.98
  8. 9
  9. 9
  10. 5/6
  11. 2.28
  12. 2/5
  13. 8/5
  14. 12
  15. 1/5
  16. 27.5
  17. 5
  18. 4
  19. 1/54
  20. 76.5
  21. 8
  22. 31.5
  23. 2.6
  24. 59
  25. 45/32
  26. 22.4
  27. 14/45
  28. 1/2
  29. 18/5
  30. 9/2
  31. 16/21
  32. 0.96
  33. 7/5
  34. 26.4
  35. 25/54
  36. 7/4
  37. 37.4
  38. 3.42
  39. 4/63
  40. 3/7

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