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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 432 · 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 bottle of oil holds 6.4 L. How many L do 9 of them make in all? =
  2. 2.5/7 ÷ 3/7 =
  3. 3.5/6 × 12 =
  4. 4.4/9 × 1/3 =
  5. 5.One roll of ribbon has 3 m. How many m do 7 of them make in all? =
  6. 6.3/5 × 7/8 =
  7. 7.One bottle of oil holds 3.9 L. How many L do 3 of them make in all? =
  8. 8.4/7 × 2/5 =
  9. 9.2.2 × 0.6 =
  10. 10.3/5 × 5/6 =
  11. 11.10.84 ÷ 4 =
  12. 12.53.12 ÷ 8 =
  13. 13.3/8 × 4/7 =
  14. 14.4.7 × 0.3 =
  15. 15.1/4 × 5 =
  16. 16.5/6 ÷ 2/3 =
  17. 17.5/9 × 3 =
  18. 18.37.36 ÷ 4 =
  19. 19.2.4 ÷ 0.6 =
  20. 20.One bottle of oil holds 1.9 L. How many L do 12 of them make in all? =
  21. 21.8/9 × 3/7 =
  22. 22.1/6 × 3/8 =
  23. 23.5/8 × 1/2 =
  24. 24.4.1 × 0.3 =
  25. 25.1.4 ÷ 0.2 =
  26. 26.One bottle of oil holds 2.1 L. How many L do 11 of them make in all? =
  27. 27.One packet of rice weighs 6.2 kg. How many kg do 10 of them make in all? =
  28. 28.9.2 ÷ 8 =
  29. 29.0.6 ÷ 0.3 =
  30. 30.7/8 ÷ 1/3 =
  31. 31.1.4 ÷ 0.7 =
  32. 32.28.72 ÷ 8 =
  33. 33.7/9 × 8 =
  34. 34.1/4 × 3/5 =
  35. 35.39.6 ÷ 8 =
  36. 36.4/5 ÷ 5/6 =
  37. 37.6.3 ÷ 2 =
  38. 38.3/8 × 5/9 =
  39. 39.0.2 × 0.5 =
  40. 40.4.34 ÷ 2 =

Answer key

  1. 57.6
  2. 5/3
  3. 10
  4. 4/27
  5. 21
  6. 21/40
  7. 11.7
  8. 8/35
  9. 1.32
  10. 1/2
  11. 2.71
  12. 6.64
  13. 3/14
  14. 1.41
  15. 5/4
  16. 5/4
  17. 5/3
  18. 9.34
  19. 4
  20. 22.8
  21. 8/21
  22. 1/16
  23. 5/16
  24. 1.23
  25. 7
  26. 23.1
  27. 62
  28. 1.15
  29. 2
  30. 21/8
  31. 2
  32. 3.59
  33. 56/9
  34. 3/20
  35. 4.95
  36. 24/25
  37. 3.15
  38. 5/24
  39. 0.1
  40. 2.17

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