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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 379 · 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 bottle of oil holds 2.5 L. How many L do 5 of them make in all? =
  2. 2.1/2 ÷ 1/5 =
  3. 3.2.4 ÷ 0.2 =
  4. 4.One roll of ribbon has 7.3 m. How many m do 9 of them make in all? =
  5. 5.4/7 × 1/3 =
  6. 6.1/8 × 1/8 =
  7. 7.32.8 ÷ 8 =
  8. 8.7.3 × 0.6 =
  9. 9.2/7 ÷ 8/9 =
  10. 10.1.5 ÷ 0.3 =
  11. 11.1/6 × 1/8 =
  12. 12.40.45 ÷ 5 =
  13. 13.2/5 ÷ 2/7 =
  14. 14.3.02 ÷ 2 =
  15. 15.5/8 × 9 =
  16. 16.6.8 ÷ 4 =
  17. 17.One bag of potatoes weighs 9.2 kg. How many kg do 10 of them make in all? =
  18. 18.1/7 ÷ 1/6 =
  19. 19.One packet of rice weighs 4.1 kg. How many kg do 4 of them make in all? =
  20. 20.2/9 × 8/9 =
  21. 21.2/5 × 9 =
  22. 22.2/7 ÷ 5/6 =
  23. 23.9.4 × 0.9 =
  24. 24.1/6 ÷ 1/2 =
  25. 25.One bag of potatoes weighs 2 kg. How many kg do 8 of them make in all? =
  26. 26.6/7 × 15 =
  27. 27.3.8 × 0.8 =
  28. 28.4.4 × 0.5 =
  29. 29.29.04 ÷ 4 =
  30. 30.4.9 ÷ 0.7 =
  31. 31.1/6 × 4 =
  32. 32.1.32 ÷ 4 =
  33. 33.One bottle of oil holds 9.4 L. How many L do 3 of them make in all? =
  34. 34.1/3 × 3/4 =
  35. 35.4/5 × 9 =
  36. 36.1.2 ÷ 0.6 =
  37. 37.One jug of milk holds 2 L. How many L do 4 of them make in all? =
  38. 38.16.7 ÷ 2 =
  39. 39.13.88 ÷ 4 =
  40. 40.1/4 × 13 =

Answer key

  1. 12.5
  2. 5/2
  3. 12
  4. 65.7
  5. 4/21
  6. 1/64
  7. 4.1
  8. 4.38
  9. 9/28
  10. 5
  11. 1/48
  12. 8.09
  13. 7/5
  14. 1.51
  15. 45/8
  16. 1.7
  17. 92
  18. 6/7
  19. 16.4
  20. 16/81
  21. 18/5
  22. 12/35
  23. 8.46
  24. 1/3
  25. 16
  26. 90/7
  27. 3.04
  28. 2.2
  29. 7.26
  30. 7
  31. 2/3
  32. 0.33
  33. 28.2
  34. 1/4
  35. 36/5
  36. 2
  37. 8
  38. 8.35
  39. 3.47
  40. 13/4

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