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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 309 · 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. 1.78.08 ÷ 8 =
  2. 2.0.8 ÷ 0.4 =
  3. 3.3/4 ÷ 3/4 =
  4. 4.33.2 ÷ 5 =
  5. 5.1/2 × 4/7 =
  6. 6.1.4 ÷ 0.2 =
  7. 7.1/7 × 12 =
  8. 8.3.6 ÷ 0.4 =
  9. 9.3 ÷ 0.5 =
  10. 10.4.2 ÷ 0.7 =
  11. 11.1/2 × 2 =
  12. 12.2/5 ÷ 6/7 =
  13. 13.3.7 × 0.6 =
  14. 14.15.44 ÷ 8 =
  15. 15.3/4 × 3/7 =
  16. 16.4/5 × 12 =
  17. 17.1.6 ÷ 0.2 =
  18. 18.3/8 × 4/9 =
  19. 19.One bottle of oil holds 6.6 L. How many L do 12 of them make in all? =
  20. 20.4/7 × 2 =
  21. 21.One bag of potatoes weighs 4.1 kg. How many kg do 4 of them make in all? =
  22. 22.0.9 ÷ 0.3 =
  23. 23.9.9 × 0.2 =
  24. 24.One bottle of oil holds 1.9 L. How many L do 10 of them make in all? =
  25. 25.One packet of rice weighs 1.8 kg. How many kg do 7 of them make in all? =
  26. 26.1/3 × 3/4 =
  27. 27.8.8 ÷ 0.8 =
  28. 28.5/7 × 15 =
  29. 29.6.7 × 0.8 =
  30. 30.One bag of potatoes weighs 9.8 kg. How many kg do 6 of them make in all? =
  31. 31.7.5 × 0.3 =
  32. 32.4/5 × 3/5 =
  33. 33.1.9 × 0.7 =
  34. 34.5/9 × 7/9 =
  35. 35.3.5 ÷ 0.7 =
  36. 36.1/2 × 1/8 =
  37. 37.2/9 × 11 =
  38. 38.1/3 × 1/9 =
  39. 39.7/9 ÷ 1/3 =
  40. 40.1/8 × 7 =

Answer key

  1. 9.76
  2. 2
  3. 1
  4. 6.64
  5. 2/7
  6. 7
  7. 12/7
  8. 9
  9. 6
  10. 6
  11. 1
  12. 7/15
  13. 2.22
  14. 1.93
  15. 9/28
  16. 48/5
  17. 8
  18. 1/6
  19. 79.2
  20. 8/7
  21. 16.4
  22. 3
  23. 1.98
  24. 19
  25. 12.6
  26. 1/4
  27. 11
  28. 75/7
  29. 5.36
  30. 58.8
  31. 2.25
  32. 12/25
  33. 1.33
  34. 35/81
  35. 5
  36. 1/16
  37. 22/9
  38. 1/27
  39. 7/3
  40. 7/8

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