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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 52 · 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. 1.8/9 × 1/5 =
  2. 2.1/8 × 1/3 =
  3. 3.2/5 × 6 =
  4. 4.2/5 × 7 =
  5. 5.One roll of ribbon has 7.3 m. How many m do 5 of them make in all? =
  6. 6.4/7 × 7 =
  7. 7.4/5 ÷ 7/9 =
  8. 8.3/5 × 11 =
  9. 9.55.76 ÷ 8 =
  10. 10.5/6 × 3/8 =
  11. 11.4/9 × 5/9 =
  12. 12.One roll of ribbon has 8.6 m. How many m do 9 of them make in all? =
  13. 13.1 ÷ 0.5 =
  14. 14.One bottle of oil holds 9.3 L. How many L do 3 of them make in all? =
  15. 15.2/3 × 9 =
  16. 16.2/3 × 4 =
  17. 17.2/3 × 2/3 =
  18. 18.9.2 × 0.2 =
  19. 19.32.64 ÷ 4 =
  20. 20.2/9 × 1/7 =
  21. 21.4/9 × 11 =
  22. 22.30.72 ÷ 4 =
  23. 23.6 ÷ 0.6 =
  24. 24.1/2 ÷ 7/8 =
  25. 25.3/4 ÷ 1/9 =
  26. 26.6/7 × 4/5 =
  27. 27.1/9 × 11 =
  28. 28.One packet of rice weighs 6.2 kg. How many kg do 3 of them make in all? =
  29. 29.1/7 × 1/7 =
  30. 30.One roll of ribbon has 1.2 m. How many m do 12 of them make in all? =
  31. 31.One roll of ribbon has 2.7 m. How many m do 2 of them make in all? =
  32. 32.2 ÷ 0.2 =
  33. 33.6.7 × 0.2 =
  34. 34.6.3 × 0.2 =
  35. 35.4/9 × 2/3 =
  36. 36.3/7 ÷ 1/4 =
  37. 37.1/7 × 2 =
  38. 38.5/7 × 1/6 =
  39. 39.5/6 ÷ 4/9 =
  40. 40.One roll of ribbon has 1.3 m. How many m do 4 of them make in all? =

Answer key

  1. 8/45
  2. 1/24
  3. 12/5
  4. 14/5
  5. 36.5
  6. 4
  7. 36/35
  8. 33/5
  9. 6.97
  10. 5/16
  11. 20/81
  12. 77.4
  13. 2
  14. 27.9
  15. 6
  16. 8/3
  17. 4/9
  18. 1.84
  19. 8.16
  20. 2/63
  21. 44/9
  22. 7.68
  23. 10
  24. 4/7
  25. 27/4
  26. 24/35
  27. 11/9
  28. 18.6
  29. 1/49
  30. 14.4
  31. 5.4
  32. 10
  33. 1.34
  34. 1.26
  35. 8/27
  36. 12/7
  37. 2/7
  38. 5/42
  39. 15/8
  40. 5.2

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