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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 541 · 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.One roll of ribbon has 3.9 m. How many m do 2 of them make in all? =
  2. 2.6 ÷ 0.6 =
  3. 3.One packet of rice weighs 8.7 kg. How many kg do 7 of them make in all? =
  4. 4.2.9 × 0.2 =
  5. 5.0.8 ÷ 0.4 =
  6. 6.7/9 × 5/6 =
  7. 7.2.2 × 0.2 =
  8. 8.1.6 ÷ 0.2 =
  9. 9.6/7 ÷ 1/9 =
  10. 10.6/7 × 5/9 =
  11. 11.7/8 × 3/8 =
  12. 12.1/4 × 1/7 =
  13. 13.5/7 × 7/9 =
  14. 14.7/8 × 7 =
  15. 15.5/7 × 8 =
  16. 16.3.2 ÷ 0.4 =
  17. 17.3.2 × 0.5 =
  18. 18.0.6 ÷ 0.2 =
  19. 19.5/6 × 1/2 =
  20. 20.One bag of potatoes weighs 3.4 kg. How many kg do 11 of them make in all? =
  21. 21.1/2 × 6 =
  22. 22.One packet of rice weighs 5 kg. How many kg do 5 of them make in all? =
  23. 23.6/7 ÷ 1/6 =
  24. 24.One bottle of oil holds 6.1 L. How many L do 2 of them make in all? =
  25. 25.42.25 ÷ 5 =
  26. 26.5/9 × 15 =
  27. 27.9.5 × 0.4 =
  28. 28.5.5 ÷ 0.5 =
  29. 29.3/4 × 15 =
  30. 30.3/5 ÷ 8/9 =
  31. 31.4.8 ÷ 0.4 =
  32. 32.9.4 × 0.2 =
  33. 33.0.4 ÷ 0.2 =
  34. 34.2/5 ÷ 2/5 =
  35. 35.3/4 ÷ 4/5 =
  36. 36.One roll of ribbon has 3.6 m. How many m do 2 of them make in all? =
  37. 37.2/9 ÷ 1/6 =
  38. 38.8/9 × 3 =
  39. 39.3.1 × 0.8 =
  40. 40.3/4 × 3/4 =

Answer key

  1. 7.8
  2. 10
  3. 60.9
  4. 0.58
  5. 2
  6. 35/54
  7. 0.44
  8. 8
  9. 54/7
  10. 10/21
  11. 21/64
  12. 1/28
  13. 5/9
  14. 49/8
  15. 40/7
  16. 8
  17. 1.6
  18. 3
  19. 5/12
  20. 37.4
  21. 3
  22. 25
  23. 36/7
  24. 12.2
  25. 8.45
  26. 25/3
  27. 3.8
  28. 11
  29. 45/4
  30. 27/40
  31. 12
  32. 1.88
  33. 2
  34. 1
  35. 15/16
  36. 7.2
  37. 4/3
  38. 8/3
  39. 2.48
  40. 9/16

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