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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 485 · 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 ÷ 1/3 =
  2. 2.4.2 × 0.9 =
  3. 3.One bottle of oil holds 3.2 L. How many L do 2 of them make in all? =
  4. 4.3.3 ÷ 0.3 =
  5. 5.One bag of potatoes weighs 2.2 kg. How many kg do 4 of them make in all? =
  6. 6.3/4 ÷ 1/2 =
  7. 7.One bottle of oil holds 5.2 L. How many L do 11 of them make in all? =
  8. 8.One jug of milk holds 1.2 L. How many L do 11 of them make in all? =
  9. 9.16.64 ÷ 4 =
  10. 10.5/6 × 6 =
  11. 11.1/9 × 6 =
  12. 12.2/5 × 2/5 =
  13. 13.10.48 ÷ 2 =
  14. 14.1/7 × 8 =
  15. 15.4/7 ÷ 6/7 =
  16. 16.2/9 ÷ 4/9 =
  17. 17.One roll of ribbon has 1.8 m. How many m do 12 of them make in all? =
  18. 18.29.6 ÷ 4 =
  19. 19.4/7 × 9 =
  20. 20.5/8 ÷ 3/7 =
  21. 21.4.5 ÷ 0.5 =
  22. 22.7/8 × 4 =
  23. 23.3.2 ÷ 0.8 =
  24. 24.2/3 ÷ 1/6 =
  25. 25.4.5 ÷ 0.9 =
  26. 26.8/9 × 1/5 =
  27. 27.7/9 × 1/2 =
  28. 28.One roll of ribbon has 2.1 m. How many m do 5 of them make in all? =
  29. 29.1 ÷ 0.5 =
  30. 30.3/5 ÷ 4/5 =
  31. 31.8.1 × 0.9 =
  32. 32.1/2 × 3/4 =
  33. 33.3/5 ÷ 4/9 =
  34. 34.2/9 ÷ 1/5 =
  35. 35.2/7 × 1/6 =
  36. 36.1/4 × 3/8 =
  37. 37.One packet of rice weighs 4.2 kg. How many kg do 10 of them make in all? =
  38. 38.One bag of potatoes weighs 1.9 kg. How many kg do 8 of them make in all? =
  39. 39.5/6 ÷ 1/8 =
  40. 40.One jug of milk holds 9.8 L. How many L do 3 of them make in all? =

Answer key

  1. 15/7
  2. 3.78
  3. 6.4
  4. 11
  5. 8.8
  6. 3/2
  7. 57.2
  8. 13.2
  9. 4.16
  10. 5
  11. 2/3
  12. 4/25
  13. 5.24
  14. 8/7
  15. 2/3
  16. 1/2
  17. 21.6
  18. 7.4
  19. 36/7
  20. 35/24
  21. 9
  22. 7/2
  23. 4
  24. 4
  25. 5
  26. 8/45
  27. 7/18
  28. 10.5
  29. 2
  30. 3/4
  31. 7.29
  32. 3/8
  33. 27/20
  34. 10/9
  35. 1/21
  36. 3/32
  37. 42
  38. 15.2
  39. 20/3
  40. 29.4

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