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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 483 · 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. 1.5/7 × 4/9 =
  2. 2.0.3 × 0.3 =
  3. 3.5/6 ÷ 7/9 =
  4. 4.3/4 × 3 =
  5. 5.One bag of potatoes weighs 4.5 kg. How many kg do 5 of them make in all? =
  6. 6.4.2 × 0.5 =
  7. 7.1/8 × 12 =
  8. 8.4/5 × 4 =
  9. 9.3.6 ÷ 0.6 =
  10. 10.One packet of rice weighs 5.4 kg. How many kg do 9 of them make in all? =
  11. 11.3/5 × 2/9 =
  12. 12.4 ÷ 0.4 =
  13. 13.4/9 ÷ 2/5 =
  14. 14.3/4 × 1/2 =
  15. 15.One packet of rice weighs 9.1 kg. How many kg do 9 of them make in all? =
  16. 16.5/7 ÷ 3/7 =
  17. 17.1.4 ÷ 0.2 =
  18. 18.3/5 ÷ 2/7 =
  19. 19.5/6 × 6/7 =
  20. 20.One jug of milk holds 2.4 L. How many L do 5 of them make in all? =
  21. 21.3/5 × 12 =
  22. 22.1/3 ÷ 4/9 =
  23. 23.3/5 × 3/4 =
  24. 24.49 ÷ 5 =
  25. 25.7.6 × 0.7 =
  26. 26.1/8 × 5/8 =
  27. 27.3/4 ÷ 7/9 =
  28. 28.18.28 ÷ 4 =
  29. 29.7/8 ÷ 2/7 =
  30. 30.39.7 ÷ 5 =
  31. 31.One bag of potatoes weighs 5.6 kg. How many kg do 4 of them make in all? =
  32. 32.5.9 × 0.5 =
  33. 33.6/7 × 13 =
  34. 34.One packet of rice weighs 8.9 kg. How many kg do 12 of them make in all? =
  35. 35.1/7 × 4/7 =
  36. 36.0.6 ÷ 0.2 =
  37. 37.8.7 × 0.8 =
  38. 38.1/2 ÷ 3/4 =
  39. 39.2/7 × 2/5 =
  40. 40.1/9 × 7 =

Answer key

  1. 20/63
  2. 0.09
  3. 15/14
  4. 9/4
  5. 22.5
  6. 2.1
  7. 3/2
  8. 16/5
  9. 6
  10. 48.6
  11. 2/15
  12. 10
  13. 10/9
  14. 3/8
  15. 81.9
  16. 5/3
  17. 7
  18. 21/10
  19. 5/7
  20. 12
  21. 36/5
  22. 3/4
  23. 9/20
  24. 9.8
  25. 5.32
  26. 5/64
  27. 27/28
  28. 4.57
  29. 49/16
  30. 7.94
  31. 22.4
  32. 2.95
  33. 78/7
  34. 106.8
  35. 4/49
  36. 3
  37. 6.96
  38. 2/3
  39. 4/35
  40. 7/9

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