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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 414 · 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. 1.2/9 × 5/9 =
  2. 2.1.6 ÷ 0.2 =
  3. 3.5/6 × 6/7 =
  4. 4.2/5 × 10 =
  5. 5.1/5 ÷ 2/5 =
  6. 6.9.6 × 0.9 =
  7. 7.7/9 ÷ 1/6 =
  8. 8.4.8 × 0.4 =
  9. 9.1 ÷ 0.2 =
  10. 10.6/7 × 13 =
  11. 11.1.6 × 0.9 =
  12. 12.One bag of potatoes weighs 1.9 kg. How many kg do 7 of them make in all? =
  13. 13.3/8 ÷ 2/7 =
  14. 14.6/7 × 2/5 =
  15. 15.9.5 × 0.4 =
  16. 16.5/9 × 3/5 =
  17. 17.5/7 ÷ 1/3 =
  18. 18.3.7 × 0.3 =
  19. 19.1/6 × 8 =
  20. 20.52.96 ÷ 8 =
  21. 21.2/3 × 1/3 =
  22. 22.One packet of rice weighs 9.9 kg. How many kg do 9 of them make in all? =
  23. 23.3/5 × 7 =
  24. 24.7/9 × 12 =
  25. 25.One packet of rice weighs 6 kg. How many kg do 2 of them make in all? =
  26. 26.1/7 × 15 =
  27. 27.2.5 ÷ 0.5 =
  28. 28.2/9 × 4/7 =
  29. 29.One bag of potatoes weighs 8.9 kg. How many kg do 2 of them make in all? =
  30. 30.11.8 ÷ 2 =
  31. 31.1.78 ÷ 2 =
  32. 32.4.9 × 0.3 =
  33. 33.5/6 × 9 =
  34. 34.2.1 ÷ 0.3 =
  35. 35.One roll of ribbon has 9.8 m. How many m do 3 of them make in all? =
  36. 36.3/5 × 1/4 =
  37. 37.1.7 × 0.8 =
  38. 38.1/6 × 5 =
  39. 39.24.76 ÷ 4 =
  40. 40.7.2 × 0.9 =

Answer key

  1. 10/81
  2. 8
  3. 5/7
  4. 4
  5. 1/2
  6. 8.64
  7. 14/3
  8. 1.92
  9. 5
  10. 78/7
  11. 1.44
  12. 13.3
  13. 21/16
  14. 12/35
  15. 3.8
  16. 1/3
  17. 15/7
  18. 1.11
  19. 4/3
  20. 6.62
  21. 2/9
  22. 89.1
  23. 21/5
  24. 28/3
  25. 12
  26. 15/7
  27. 5
  28. 8/63
  29. 17.8
  30. 5.9
  31. 0.89
  32. 1.47
  33. 15/2
  34. 7
  35. 29.4
  36. 3/20
  37. 1.36
  38. 5/6
  39. 6.19
  40. 6.48

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