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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 277 · 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. 1.2/3 ÷ 1/5 =
  2. 2.4.4 × 0.3 =
  3. 3.7.2 ÷ 0.9 =
  4. 4.2.7 ÷ 0.3 =
  5. 5.One bag of potatoes weighs 4.1 kg. How many kg do 12 of them make in all? =
  6. 6.7/9 × 1/4 =
  7. 7.5/7 × 7/9 =
  8. 8.One bottle of oil holds 6.1 L. How many L do 10 of them make in all? =
  9. 9.5/6 × 14 =
  10. 10.One jug of milk holds 4.3 L. How many L do 5 of them make in all? =
  11. 11.15.2 ÷ 2 =
  12. 12.One roll of ribbon has 8.4 m. How many m do 11 of them make in all? =
  13. 13.1.7 × 0.2 =
  14. 14.1.92 ÷ 8 =
  15. 15.5/7 × 5/6 =
  16. 16.4.2 ÷ 0.6 =
  17. 17.One packet of rice weighs 9.3 kg. How many kg do 2 of them make in all? =
  18. 18.1/2 ÷ 1/4 =
  19. 19.One bag of potatoes weighs 3.1 kg. How many kg do 7 of them make in all? =
  20. 20.8.84 ÷ 2 =
  21. 21.6/7 × 10 =
  22. 22.1/9 ÷ 3/7 =
  23. 23.4/9 × 3/5 =
  24. 24.1.1 ÷ 2 =
  25. 25.5.08 ÷ 2 =
  26. 26.1/7 × 4/9 =
  27. 27.One roll of ribbon has 4.8 m. How many m do 4 of them make in all? =
  28. 28.10.32 ÷ 4 =
  29. 29.1/3 ÷ 5/7 =
  30. 30.6.64 ÷ 2 =
  31. 31.5.4 ÷ 0.6 =
  32. 32.7/8 ÷ 5/7 =
  33. 33.One packet of rice weighs 4.6 kg. How many kg do 9 of them make in all? =
  34. 34.3 ÷ 0.5 =
  35. 35.9.68 ÷ 4 =
  36. 36.2.7 ÷ 0.9 =
  37. 37.37.4 ÷ 5 =
  38. 38.7.7 ÷ 0.7 =
  39. 39.5/6 × 1/8 =
  40. 40.1/5 × 14 =

Answer key

  1. 10/3
  2. 1.32
  3. 8
  4. 9
  5. 49.2
  6. 7/36
  7. 5/9
  8. 61
  9. 35/3
  10. 21.5
  11. 7.6
  12. 92.4
  13. 0.34
  14. 0.24
  15. 25/42
  16. 7
  17. 18.6
  18. 2
  19. 21.7
  20. 4.42
  21. 60/7
  22. 7/27
  23. 4/15
  24. 0.55
  25. 2.54
  26. 4/63
  27. 19.2
  28. 2.58
  29. 7/15
  30. 3.32
  31. 9
  32. 49/40
  33. 41.4
  34. 6
  35. 2.42
  36. 3
  37. 7.48
  38. 11
  39. 5/48
  40. 14/5

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