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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 346 · 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 packet of rice weighs 5.5 kg. How many kg do 3 of them make in all? =
  2. 2.7/8 × 1/6 =
  3. 3.5/9 ÷ 8/9 =
  4. 4.One packet of rice weighs 1.3 kg. How many kg do 6 of them make in all? =
  5. 5.3/8 × 3/7 =
  6. 6.1.4 ÷ 0.2 =
  7. 7.1/6 × 1/4 =
  8. 8.1.8 ÷ 0.6 =
  9. 9.3/8 × 8/9 =
  10. 10.13.72 ÷ 2 =
  11. 11.One packet of rice weighs 9 kg. How many kg do 11 of them make in all? =
  12. 12.6.8 ÷ 4 =
  13. 13.7/9 × 9 =
  14. 14.3/7 × 13 =
  15. 15.2.8 ÷ 0.7 =
  16. 16.9.9 ÷ 0.9 =
  17. 17.4/9 × 2/7 =
  18. 18.1/5 ÷ 7/8 =
  19. 19.6.2 × 0.2 =
  20. 20.6.6 ÷ 0.6 =
  21. 21.2/7 × 2 =
  22. 22.1.8 ÷ 0.2 =
  23. 23.3/5 × 3 =
  24. 24.28.05 ÷ 5 =
  25. 25.2/9 ÷ 2/7 =
  26. 26.One jug of milk holds 8.7 L. How many L do 5 of them make in all? =
  27. 27.18.68 ÷ 2 =
  28. 28.One bottle of oil holds 1.4 L. How many L do 7 of them make in all? =
  29. 29.1/7 × 7 =
  30. 30.5.4 ÷ 0.6 =
  31. 31.One jug of milk holds 3.4 L. How many L do 5 of them make in all? =
  32. 32.One bag of potatoes weighs 2.4 kg. How many kg do 4 of them make in all? =
  33. 33.8/9 × 6/7 =
  34. 34.6/7 × 5/8 =
  35. 35.1/2 × 10 =
  36. 36.5.5 ÷ 0.5 =
  37. 37.One jug of milk holds 3.1 L. How many L do 11 of them make in all? =
  38. 38.4.4 × 0.7 =
  39. 39.One roll of ribbon has 9.8 m. How many m do 7 of them make in all? =
  40. 40.2/5 × 4 =

Answer key

  1. 16.5
  2. 7/48
  3. 5/8
  4. 7.8
  5. 9/56
  6. 7
  7. 1/24
  8. 3
  9. 1/3
  10. 6.86
  11. 99
  12. 1.7
  13. 7
  14. 39/7
  15. 4
  16. 11
  17. 8/63
  18. 8/35
  19. 1.24
  20. 11
  21. 4/7
  22. 9
  23. 9/5
  24. 5.61
  25. 7/9
  26. 43.5
  27. 9.34
  28. 9.8
  29. 1
  30. 9
  31. 17
  32. 9.6
  33. 16/21
  34. 15/28
  35. 5
  36. 11
  37. 34.1
  38. 3.08
  39. 68.6
  40. 8/5

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