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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 504 · 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. 1.3.6 ÷ 0.9 =
  2. 2.2/7 × 1/3 =
  3. 3.1.2 × 0.5 =
  4. 4.2/7 × 2/9 =
  5. 5.4/9 × 3/5 =
  6. 6.2/5 × 6 =
  7. 7.7/9 × 4 =
  8. 8.5/9 ÷ 2/9 =
  9. 9.5.88 ÷ 4 =
  10. 10.3/7 × 1/7 =
  11. 11.8.9 × 0.9 =
  12. 12.10.4 ÷ 5 =
  13. 13.One packet of rice weighs 6.7 kg. How many kg do 2 of them make in all? =
  14. 14.6/7 × 2/7 =
  15. 15.One packet of rice weighs 4.2 kg. How many kg do 8 of them make in all? =
  16. 16.2.4 ÷ 0.8 =
  17. 17.10.86 ÷ 2 =
  18. 18.2.2 ÷ 0.2 =
  19. 19.5/6 × 11 =
  20. 20.One bag of potatoes weighs 8.4 kg. How many kg do 3 of them make in all? =
  21. 21.1/4 ÷ 3/8 =
  22. 22.1/8 × 1/7 =
  23. 23.44.95 ÷ 5 =
  24. 24.1/2 × 5/9 =
  25. 25.0.7 × 0.6 =
  26. 26.15.62 ÷ 2 =
  27. 27.30.88 ÷ 4 =
  28. 28.One roll of ribbon has 2.6 m. How many m do 6 of them make in all? =
  29. 29.1.5 ÷ 0.3 =
  30. 30.3/5 × 4 =
  31. 31.One bag of potatoes weighs 1.2 kg. How many kg do 10 of them make in all? =
  32. 32.24.28 ÷ 4 =
  33. 33.2/5 × 2/3 =
  34. 34.3.9 × 0.8 =
  35. 35.2/3 × 1/2 =
  36. 36.1/3 ÷ 1/3 =
  37. 37.1/2 × 3/8 =
  38. 38.3 ÷ 0.5 =
  39. 39.One bag of potatoes weighs 8.6 kg. How many kg do 12 of them make in all? =
  40. 40.2/7 × 3 =

Answer key

  1. 4
  2. 2/21
  3. 0.6
  4. 4/63
  5. 4/15
  6. 12/5
  7. 28/9
  8. 5/2
  9. 1.47
  10. 3/49
  11. 8.01
  12. 2.08
  13. 13.4
  14. 12/49
  15. 33.6
  16. 3
  17. 5.43
  18. 11
  19. 55/6
  20. 25.2
  21. 2/3
  22. 1/56
  23. 8.99
  24. 5/18
  25. 0.42
  26. 7.81
  27. 7.72
  28. 15.6
  29. 5
  30. 12/5
  31. 12
  32. 6.07
  33. 4/15
  34. 3.12
  35. 1/3
  36. 1
  37. 3/16
  38. 6
  39. 103.2
  40. 6/7

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