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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 220 · 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 7.1 kg. How many kg do 5 of them make in all? =
  2. 2.1.8 ÷ 0.6 =
  3. 3.4.9 × 0.9 =
  4. 4.5/7 × 10 =
  5. 5.3/7 × 7/8 =
  6. 6.2/5 × 7 =
  7. 7.7/8 × 1/8 =
  8. 8.6/7 × 2/5 =
  9. 9.5.6 ÷ 0.7 =
  10. 10.3/4 × 1/3 =
  11. 11.1/3 ÷ 1/7 =
  12. 12.18.2 ÷ 2 =
  13. 13.5/8 × 6 =
  14. 14.2/7 × 2 =
  15. 15.One roll of ribbon has 4.4 m. How many m do 7 of them make in all? =
  16. 16.7/9 ÷ 5/8 =
  17. 17.7.8 × 0.7 =
  18. 18.4.9 × 0.3 =
  19. 19.4 ÷ 0.4 =
  20. 20.0.9 × 0.9 =
  21. 21.One bottle of oil holds 2.9 L. How many L do 4 of them make in all? =
  22. 22.One roll of ribbon has 5.6 m. How many m do 6 of them make in all? =
  23. 23.5/6 ÷ 3/5 =
  24. 24.1/6 × 5/9 =
  25. 25.One bottle of oil holds 3.5 L. How many L do 12 of them make in all? =
  26. 26.1/7 × 1/9 =
  27. 27.1/4 × 13 =
  28. 28.9.6 × 0.2 =
  29. 29.41.95 ÷ 5 =
  30. 30.2/3 × 3/4 =
  31. 31.5.76 ÷ 4 =
  32. 32.1/8 × 1/5 =
  33. 33.5/8 × 9 =
  34. 34.7.82 ÷ 2 =
  35. 35.15.8 ÷ 4 =
  36. 36.2/5 ÷ 2/9 =
  37. 37.4.9 × 0.4 =
  38. 38.One roll of ribbon has 8.5 m. How many m do 3 of them make in all? =
  39. 39.3/7 × 14 =
  40. 40.One bottle of oil holds 4 L. How many L do 3 of them make in all? =

Answer key

  1. 35.5
  2. 3
  3. 4.41
  4. 50/7
  5. 3/8
  6. 14/5
  7. 7/64
  8. 12/35
  9. 8
  10. 1/4
  11. 7/3
  12. 9.1
  13. 15/4
  14. 4/7
  15. 30.8
  16. 56/45
  17. 5.46
  18. 1.47
  19. 10
  20. 0.81
  21. 11.6
  22. 33.6
  23. 25/18
  24. 5/54
  25. 42
  26. 1/63
  27. 13/4
  28. 1.92
  29. 8.39
  30. 1/2
  31. 1.44
  32. 1/40
  33. 45/8
  34. 3.91
  35. 3.95
  36. 9/5
  37. 1.96
  38. 25.5
  39. 6
  40. 12

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