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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 124 · 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. 1.2.4 ÷ 0.4 =
  2. 2.3.3 × 0.6 =
  3. 3.One bottle of oil holds 2 L. How many L do 8 of them make in all? =
  4. 4.3/7 × 8 =
  5. 5.1/8 × 7/9 =
  6. 6.One bottle of oil holds 9.6 L. How many L do 8 of them make in all? =
  7. 7.1/8 ÷ 5/8 =
  8. 8.5/8 ÷ 1/9 =
  9. 9.4 ÷ 0.5 =
  10. 10.1/5 ÷ 2/7 =
  11. 11.1/6 ÷ 5/6 =
  12. 12.1/2 × 6/7 =
  13. 13.1.4 ÷ 0.7 =
  14. 14.1/9 × 4/7 =
  15. 15.7.7 × 0.4 =
  16. 16.69.28 ÷ 8 =
  17. 17.One packet of rice weighs 9 kg. How many kg do 11 of them make in all? =
  18. 18.5/8 × 10 =
  19. 19.One bottle of oil holds 6.5 L. How many L do 4 of them make in all? =
  20. 20.12.32 ÷ 2 =
  21. 21.7.2 ÷ 0.8 =
  22. 22.6.4 ÷ 0.8 =
  23. 23.1/3 × 7/9 =
  24. 24.4.3 × 0.8 =
  25. 25.11.2 ÷ 4 =
  26. 26.One bag of potatoes weighs 3.4 kg. How many kg do 11 of them make in all? =
  27. 27.0.3 × 0.7 =
  28. 28.5.4 ÷ 0.9 =
  29. 29.One bag of potatoes weighs 9.1 kg. How many kg do 9 of them make in all? =
  30. 30.2/5 × 5 =
  31. 31.1/2 × 4 =
  32. 32.5.5 × 0.7 =
  33. 33.3/4 × 3 =
  34. 34.1/4 ÷ 7/8 =
  35. 35.0.9 ÷ 0.3 =
  36. 36.One packet of rice weighs 5 kg. How many kg do 7 of them make in all? =
  37. 37.3/8 × 2/3 =
  38. 38.7/8 ÷ 6/7 =
  39. 39.6.88 ÷ 8 =
  40. 40.3/8 × 7 =

Answer key

  1. 6
  2. 1.98
  3. 16
  4. 24/7
  5. 7/72
  6. 76.8
  7. 1/5
  8. 45/8
  9. 8
  10. 7/10
  11. 1/5
  12. 3/7
  13. 2
  14. 4/63
  15. 3.08
  16. 8.66
  17. 99
  18. 25/4
  19. 26
  20. 6.16
  21. 9
  22. 8
  23. 7/27
  24. 3.44
  25. 2.8
  26. 37.4
  27. 0.21
  28. 6
  29. 81.9
  30. 2
  31. 2
  32. 3.85
  33. 9/4
  34. 2/7
  35. 3
  36. 35
  37. 1/4
  38. 49/48
  39. 0.86
  40. 21/8

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