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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 542 · 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 jug of milk holds 3.3 L. How many L do 3 of them make in all? =
  2. 2.3/5 × 4/5 =
  3. 3.1/4 × 2 =
  4. 4.One bottle of oil holds 2.5 L. How many L do 8 of them make in all? =
  5. 5.5.4 × 0.8 =
  6. 6.3/5 ÷ 1/8 =
  7. 7.One packet of rice weighs 1.9 kg. How many kg do 10 of them make in all? =
  8. 8.5/7 × 5 =
  9. 9.3/5 × 2/5 =
  10. 10.1/9 × 3/7 =
  11. 11.7.6 ÷ 2 =
  12. 12.One bottle of oil holds 3.6 L. How many L do 3 of them make in all? =
  13. 13.One jug of milk holds 5.7 L. How many L do 9 of them make in all? =
  14. 14.1/4 × 14 =
  15. 15.2.7 × 0.9 =
  16. 16.One bottle of oil holds 2.1 L. How many L do 10 of them make in all? =
  17. 17.2.5 × 0.3 =
  18. 18.7/9 ÷ 3/7 =
  19. 19.4.8 ÷ 0.8 =
  20. 20.3/5 ÷ 2/3 =
  21. 21.5/9 × 1/2 =
  22. 22.23.76 ÷ 8 =
  23. 23.4/7 × 3/5 =
  24. 24.One roll of ribbon has 5.5 m. How many m do 12 of them make in all? =
  25. 25.4/7 × 8/9 =
  26. 26.1.2 ÷ 0.4 =
  27. 27.1/5 ÷ 5/9 =
  28. 28.2.8 ÷ 0.4 =
  29. 29.3/7 ÷ 2/3 =
  30. 30.One bag of potatoes weighs 5.8 kg. How many kg do 10 of them make in all? =
  31. 31.1/3 × 1/9 =
  32. 32.2/7 × 2/9 =
  33. 33.1/7 ÷ 2/3 =
  34. 34.40.56 ÷ 8 =
  35. 35.2/3 ÷ 1/4 =
  36. 36.One roll of ribbon has 2.2 m. How many m do 10 of them make in all? =
  37. 37.2/7 ÷ 1/9 =
  38. 38.0.3 × 0.2 =
  39. 39.One bottle of oil holds 2 L. How many L do 4 of them make in all? =
  40. 40.1/5 ÷ 1/4 =

Answer key

  1. 9.9
  2. 12/25
  3. 1/2
  4. 20
  5. 4.32
  6. 24/5
  7. 19
  8. 25/7
  9. 6/25
  10. 1/21
  11. 3.8
  12. 10.8
  13. 51.3
  14. 7/2
  15. 2.43
  16. 21
  17. 0.75
  18. 49/27
  19. 6
  20. 9/10
  21. 5/18
  22. 2.97
  23. 12/35
  24. 66
  25. 32/63
  26. 3
  27. 9/25
  28. 7
  29. 9/14
  30. 58
  31. 1/27
  32. 4/63
  33. 3/14
  34. 5.07
  35. 8/3
  36. 22
  37. 18/7
  38. 0.06
  39. 8
  40. 4/5

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