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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 505 · 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. 1.8.3 × 0.5 =
  2. 2.One packet of rice weighs 4 kg. How many kg do 5 of them make in all? =
  3. 3.0.26 ÷ 2 =
  4. 4.23.44 ÷ 4 =
  5. 5.9.6 × 0.4 =
  6. 6.3/4 ÷ 1/4 =
  7. 7.48.88 ÷ 8 =
  8. 8.32.76 ÷ 4 =
  9. 9.1/3 × 14 =
  10. 10.7/8 ÷ 3/8 =
  11. 11.9.2 × 0.2 =
  12. 12.5/7 × 8/9 =
  13. 13.1/2 × 7/8 =
  14. 14.1/2 × 2/7 =
  15. 15.One bottle of oil holds 7.2 L. How many L do 7 of them make in all? =
  16. 16.2.2 ÷ 0.2 =
  17. 17.5/6 × 7 =
  18. 18.2.2 × 0.6 =
  19. 19.7/9 ÷ 4/5 =
  20. 20.3.2 ÷ 0.8 =
  21. 21.22.64 ÷ 4 =
  22. 22.One roll of ribbon has 9.7 m. How many m do 5 of them make in all? =
  23. 23.2/9 × 1/4 =
  24. 24.8.7 × 0.4 =
  25. 25.48.08 ÷ 8 =
  26. 26.7/8 ÷ 4/7 =
  27. 27.3/4 × 2 =
  28. 28.1/4 × 5/8 =
  29. 29.4/5 ÷ 8/9 =
  30. 30.1/2 ÷ 1/6 =
  31. 31.2/3 × 6 =
  32. 32.3/7 × 4 =
  33. 33.2/7 × 3/8 =
  34. 34.0.9 × 0.8 =
  35. 35.One packet of rice weighs 2.4 kg. How many kg do 10 of them make in all? =
  36. 36.7/8 ÷ 1/6 =
  37. 37.1/9 ÷ 4/5 =
  38. 38.4/5 ÷ 4/7 =
  39. 39.One packet of rice weighs 5.9 kg. How many kg do 3 of them make in all? =
  40. 40.2/5 × 1/2 =

Answer key

  1. 4.15
  2. 20
  3. 0.13
  4. 5.86
  5. 3.84
  6. 3
  7. 6.11
  8. 8.19
  9. 14/3
  10. 7/3
  11. 1.84
  12. 40/63
  13. 7/16
  14. 1/7
  15. 50.4
  16. 11
  17. 35/6
  18. 1.32
  19. 35/36
  20. 4
  21. 5.66
  22. 48.5
  23. 1/18
  24. 3.48
  25. 6.01
  26. 49/32
  27. 3/2
  28. 5/32
  29. 9/10
  30. 3
  31. 4
  32. 12/7
  33. 3/28
  34. 0.72
  35. 24
  36. 21/4
  37. 5/36
  38. 7/5
  39. 17.7
  40. 1/5

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