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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 535 · 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 jug of milk holds 8.1 L. How many L do 2 of them make in all? =
  2. 2.3/7 × 5 =
  3. 3.1.4 ÷ 0.2 =
  4. 4.One bag of potatoes weighs 3.7 kg. How many kg do 10 of them make in all? =
  5. 5.1.2 × 0.2 =
  6. 6.2/7 × 4 =
  7. 7.45.85 ÷ 5 =
  8. 8.1/6 ÷ 8/9 =
  9. 9.One bottle of oil holds 4.1 L. How many L do 2 of them make in all? =
  10. 10.One bottle of oil holds 5.5 L. How many L do 3 of them make in all? =
  11. 11.One packet of rice weighs 9.4 kg. How many kg do 7 of them make in all? =
  12. 12.1.2 × 0.5 =
  13. 13.4/9 ÷ 4/9 =
  14. 14.One roll of ribbon has 9.9 m. How many m do 12 of them make in all? =
  15. 15.1/3 ÷ 7/9 =
  16. 16.2/3 × 6 =
  17. 17.17.3 ÷ 2 =
  18. 18.6.6 ÷ 0.6 =
  19. 19.7/8 × 2/9 =
  20. 20.7/8 × 5/7 =
  21. 21.1/4 ÷ 3/5 =
  22. 22.4/5 ÷ 5/9 =
  23. 23.2.08 ÷ 2 =
  24. 24.4/7 × 13 =
  25. 25.0.8 ÷ 0.2 =
  26. 26.3/5 ÷ 3/8 =
  27. 27.1.2 ÷ 0.2 =
  28. 28.3/8 ÷ 3/7 =
  29. 29.1/5 × 5/9 =
  30. 30.1/8 × 2 =
  31. 31.One packet of rice weighs 2.5 kg. How many kg do 10 of them make in all? =
  32. 32.23.96 ÷ 4 =
  33. 33.6.7 × 0.8 =
  34. 34.15.92 ÷ 8 =
  35. 35.3/5 ÷ 5/8 =
  36. 36.1/3 × 1/4 =
  37. 37.5/8 ÷ 7/8 =
  38. 38.2/3 × 5/6 =
  39. 39.5.6 ÷ 0.7 =
  40. 40.1/8 × 5/9 =

Answer key

  1. 16.2
  2. 15/7
  3. 7
  4. 37
  5. 0.24
  6. 8/7
  7. 9.17
  8. 3/16
  9. 8.2
  10. 16.5
  11. 65.8
  12. 0.6
  13. 1
  14. 118.8
  15. 3/7
  16. 4
  17. 8.65
  18. 11
  19. 7/36
  20. 5/8
  21. 5/12
  22. 36/25
  23. 1.04
  24. 52/7
  25. 4
  26. 8/5
  27. 6
  28. 7/8
  29. 1/9
  30. 1/4
  31. 25
  32. 5.99
  33. 5.36
  34. 1.99
  35. 24/25
  36. 1/12
  37. 5/7
  38. 5/9
  39. 8
  40. 5/72

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