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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 189 · 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 4.3 kg. How many kg do 10 of them make in all? =
  2. 2.5/7 ÷ 1/9 =
  3. 3.9.8 × 0.2 =
  4. 4.One packet of rice weighs 3.5 kg. How many kg do 7 of them make in all? =
  5. 5.4.3 × 0.4 =
  6. 6.1/6 × 12 =
  7. 7.3/8 × 3/4 =
  8. 8.4/5 × 1/7 =
  9. 9.22.72 ÷ 8 =
  10. 10.8.4 × 0.9 =
  11. 11.One jug of milk holds 3.5 L. How many L do 3 of them make in all? =
  12. 12.31.28 ÷ 8 =
  13. 13.73.2 ÷ 8 =
  14. 14.7/9 ÷ 6/7 =
  15. 15.6.2 × 0.7 =
  16. 16.3/4 × 14 =
  17. 17.8.1 ÷ 0.9 =
  18. 18.2/5 × 3/5 =
  19. 19.2/7 × 3 =
  20. 20.19.95 ÷ 5 =
  21. 21.11 ÷ 4 =
  22. 22.1/3 ÷ 3/5 =
  23. 23.6/7 × 1/5 =
  24. 24.One roll of ribbon has 2.9 m. How many m do 5 of them make in all? =
  25. 25.43.44 ÷ 8 =
  26. 26.2/3 × 1/2 =
  27. 27.1/5 × 1/2 =
  28. 28.2.1 × 0.7 =
  29. 29.One jug of milk holds 2.6 L. How many L do 4 of them make in all? =
  30. 30.1.12 ÷ 4 =
  31. 31.2/3 ÷ 3/7 =
  32. 32.2/5 × 8 =
  33. 33.1/6 × 7/9 =
  34. 34.3/5 × 5/7 =
  35. 35.3.2 ÷ 0.4 =
  36. 36.1.2 × 0.7 =
  37. 37.8 ÷ 0.8 =
  38. 38.16.62 ÷ 2 =
  39. 39.5.8 × 0.4 =
  40. 40.One roll of ribbon has 7.2 m. How many m do 4 of them make in all? =

Answer key

  1. 43
  2. 45/7
  3. 1.96
  4. 24.5
  5. 1.72
  6. 2
  7. 9/32
  8. 4/35
  9. 2.84
  10. 7.56
  11. 10.5
  12. 3.91
  13. 9.15
  14. 49/54
  15. 4.34
  16. 21/2
  17. 9
  18. 6/25
  19. 6/7
  20. 3.99
  21. 2.75
  22. 5/9
  23. 6/35
  24. 14.5
  25. 5.43
  26. 1/3
  27. 1/10
  28. 1.47
  29. 10.4
  30. 0.28
  31. 14/9
  32. 16/5
  33. 7/54
  34. 3/7
  35. 8
  36. 0.84
  37. 10
  38. 8.31
  39. 2.32
  40. 28.8

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