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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 227 · 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. 1.3/8 × 2/5 =
  2. 2.9.38 ÷ 2 =
  3. 3.One roll of ribbon has 5.1 m. How many m do 8 of them make in all? =
  4. 4.9.1 × 0.7 =
  5. 5.2.4 ÷ 0.4 =
  6. 6.One bottle of oil holds 5.8 L. How many L do 3 of them make in all? =
  7. 7.5/8 ÷ 2/3 =
  8. 8.4/7 × 3/8 =
  9. 9.One bottle of oil holds 4.8 L. How many L do 9 of them make in all? =
  10. 10.3.5 ÷ 0.7 =
  11. 11.2/5 × 2/9 =
  12. 12.6.9 × 0.9 =
  13. 13.6/7 × 6/7 =
  14. 14.One roll of ribbon has 1.2 m. How many m do 8 of them make in all? =
  15. 15.42.75 ÷ 5 =
  16. 16.2.7 × 0.9 =
  17. 17.One bottle of oil holds 3 L. How many L do 7 of them make in all? =
  18. 18.1.5 ÷ 0.5 =
  19. 19.5.6 ÷ 0.8 =
  20. 20.1/5 ÷ 1/2 =
  21. 21.2/7 ÷ 5/6 =
  22. 22.1/3 × 8/9 =
  23. 23.2/5 × 4 =
  24. 24.One roll of ribbon has 1.6 m. How many m do 6 of them make in all? =
  25. 25.3/4 ÷ 1/3 =
  26. 26.8/9 ÷ 3/7 =
  27. 27.36 ÷ 4 =
  28. 28.35.12 ÷ 8 =
  29. 29.1 ÷ 0.2 =
  30. 30.5/6 × 8 =
  31. 31.3/8 × 6 =
  32. 32.2.4 ÷ 0.6 =
  33. 33.45.5 ÷ 5 =
  34. 34.One packet of rice weighs 3.1 kg. How many kg do 4 of them make in all? =
  35. 35.5/9 ÷ 7/8 =
  36. 36.1/9 × 5/7 =
  37. 37.One packet of rice weighs 4.3 kg. How many kg do 9 of them make in all? =
  38. 38.One roll of ribbon has 7.1 m. How many m do 4 of them make in all? =
  39. 39.8/9 × 2 =
  40. 40.5/7 × 1/9 =

Answer key

  1. 3/20
  2. 4.69
  3. 40.8
  4. 6.37
  5. 6
  6. 17.4
  7. 15/16
  8. 3/14
  9. 43.2
  10. 5
  11. 4/45
  12. 6.21
  13. 36/49
  14. 9.6
  15. 8.55
  16. 2.43
  17. 21
  18. 3
  19. 7
  20. 2/5
  21. 12/35
  22. 8/27
  23. 8/5
  24. 9.6
  25. 9/4
  26. 56/27
  27. 9
  28. 4.39
  29. 5
  30. 20/3
  31. 9/4
  32. 4
  33. 9.1
  34. 12.4
  35. 40/63
  36. 5/63
  37. 38.7
  38. 28.4
  39. 16/9
  40. 5/63

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