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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 226 · 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. 1.2/9 × 8 =
  2. 2.2/9 ÷ 3/5 =
  3. 3.4/7 × 2/5 =
  4. 4.One roll of ribbon has 9.7 m. How many m do 12 of them make in all? =
  5. 5.5/8 × 2/9 =
  6. 6.1/9 × 7/8 =
  7. 7.47.7 ÷ 5 =
  8. 8.1/9 × 5/8 =
  9. 9.6.5 × 0.6 =
  10. 10.11.44 ÷ 8 =
  11. 11.1.5 × 0.9 =
  12. 12.3/5 × 3/7 =
  13. 13.2/7 × 9 =
  14. 14.One bottle of oil holds 5 L. How many L do 6 of them make in all? =
  15. 15.One bottle of oil holds 6.4 L. How many L do 6 of them make in all? =
  16. 16.6.3 ÷ 0.9 =
  17. 17.One roll of ribbon has 6.5 m. How many m do 11 of them make in all? =
  18. 18.5.7 × 0.5 =
  19. 19.4/9 × 4 =
  20. 20.1/2 ÷ 1/5 =
  21. 21.1/8 × 4 =
  22. 22.6.3 ÷ 0.7 =
  23. 23.1/9 × 11 =
  24. 24.1/2 × 15 =
  25. 25.One jug of milk holds 2.8 L. How many L do 10 of them make in all? =
  26. 26.36.6 ÷ 4 =
  27. 27.1.4 × 0.5 =
  28. 28.15.8 ÷ 4 =
  29. 29.1.8 ÷ 0.2 =
  30. 30.4/9 × 3 =
  31. 31.5/8 × 10 =
  32. 32.4.3 × 0.2 =
  33. 33.1/3 × 5/7 =
  34. 34.One bag of potatoes weighs 3.5 kg. How many kg do 3 of them make in all? =
  35. 35.3.6 ÷ 0.9 =
  36. 36.3/5 × 8 =
  37. 37.2/9 × 1/9 =
  38. 38.1.4 ÷ 0.2 =
  39. 39.One bag of potatoes weighs 8.9 kg. How many kg do 4 of them make in all? =
  40. 40.1/5 ÷ 1/6 =

Answer key

  1. 16/9
  2. 10/27
  3. 8/35
  4. 116.4
  5. 5/36
  6. 7/72
  7. 9.54
  8. 5/72
  9. 3.9
  10. 1.43
  11. 1.35
  12. 9/35
  13. 18/7
  14. 30
  15. 38.4
  16. 7
  17. 71.5
  18. 2.85
  19. 16/9
  20. 5/2
  21. 1/2
  22. 9
  23. 11/9
  24. 15/2
  25. 28
  26. 9.15
  27. 0.7
  28. 3.95
  29. 9
  30. 4/3
  31. 25/4
  32. 0.86
  33. 5/21
  34. 10.5
  35. 4
  36. 24/5
  37. 2/81
  38. 7
  39. 35.6
  40. 6/5

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