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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 3 · 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. 1.1/8 × 9 =
  2. 2.2.1 ÷ 0.3 =
  3. 3.1/5 ÷ 5/9 =
  4. 4.2/5 × 2 =
  5. 5.1.6 × 0.9 =
  6. 6.5/7 × 6/7 =
  7. 7.1.4 × 0.5 =
  8. 8.2/3 × 4/7 =
  9. 9.1/9 ÷ 6/7 =
  10. 10.2/3 ÷ 1/6 =
  11. 11.26.44 ÷ 4 =
  12. 12.2.2 × 0.3 =
  13. 13.One packet of rice weighs 1.3 kg. How many kg do 3 of them make in all? =
  14. 14.0.4 ÷ 0.2 =
  15. 15.1/5 × 10 =
  16. 16.1/5 ÷ 5/7 =
  17. 17.9.9 ÷ 0.9 =
  18. 18.3/5 × 12 =
  19. 19.2.7 ÷ 0.3 =
  20. 20.One bag of potatoes weighs 8.8 kg. How many kg do 4 of them make in all? =
  21. 21.6.2 × 0.8 =
  22. 22.1/9 × 3/7 =
  23. 23.8/9 ÷ 4/5 =
  24. 24.8.9 × 0.8 =
  25. 25.One jug of milk holds 9.9 L. How many L do 3 of them make in all? =
  26. 26.1/3 × 8 =
  27. 27.4/9 × 15 =
  28. 28.5/7 × 11 =
  29. 29.3/4 × 4 =
  30. 30.4.88 ÷ 2 =
  31. 31.One jug of milk holds 8.9 L. How many L do 4 of them make in all? =
  32. 32.2/3 × 15 =
  33. 33.7.7 ÷ 0.7 =
  34. 34.7.1 × 0.4 =
  35. 35.1.4 ÷ 0.2 =
  36. 36.1/5 ÷ 2/7 =
  37. 37.3/5 ÷ 5/8 =
  38. 38.5/6 × 3/8 =
  39. 39.7.6 × 0.2 =
  40. 40.4.5 × 0.6 =

Answer key

  1. 9/8
  2. 7
  3. 9/25
  4. 4/5
  5. 1.44
  6. 30/49
  7. 0.7
  8. 8/21
  9. 7/54
  10. 4
  11. 6.61
  12. 0.66
  13. 3.9
  14. 2
  15. 2
  16. 7/25
  17. 11
  18. 36/5
  19. 9
  20. 35.2
  21. 4.96
  22. 1/21
  23. 10/9
  24. 7.12
  25. 29.7
  26. 8/3
  27. 20/3
  28. 55/7
  29. 3
  30. 2.44
  31. 35.6
  32. 10
  33. 11
  34. 2.84
  35. 7
  36. 7/10
  37. 24/25
  38. 5/16
  39. 1.52
  40. 2.7

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