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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 445 · 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. 1.2/3 ÷ 1/5 =
  2. 2.6.6 × 0.7 =
  3. 3.1/4 × 5 =
  4. 4.6.64 ÷ 8 =
  5. 5.15.24 ÷ 4 =
  6. 6.7/9 × 1/8 =
  7. 7.3/8 × 1/4 =
  8. 8.One jug of milk holds 8.6 L. How many L do 6 of them make in all? =
  9. 9.1.6 ÷ 4 =
  10. 10.7.7 × 0.9 =
  11. 11.6/7 ÷ 1/3 =
  12. 12.6/7 × 1/3 =
  13. 13.7/9 × 1/5 =
  14. 14.5/7 × 5/8 =
  15. 15.3/7 × 7/9 =
  16. 16.3/8 × 2/5 =
  17. 17.5/7 ÷ 1/5 =
  18. 18.One bag of potatoes weighs 2.2 kg. How many kg do 3 of them make in all? =
  19. 19.One packet of rice weighs 4.3 kg. How many kg do 5 of them make in all? =
  20. 20.8.9 × 0.5 =
  21. 21.7/8 × 5 =
  22. 22.6/7 × 3/4 =
  23. 23.5/9 × 1/4 =
  24. 24.1/7 × 3 =
  25. 25.29.1 ÷ 5 =
  26. 26.1/5 × 9 =
  27. 27.1/9 ÷ 1/7 =
  28. 28.3/7 ÷ 1/3 =
  29. 29.3/5 × 8/9 =
  30. 30.7/9 × 15 =
  31. 31.One packet of rice weighs 3.5 kg. How many kg do 3 of them make in all? =
  32. 32.One bottle of oil holds 2.7 L. How many L do 2 of them make in all? =
  33. 33.3/5 × 7 =
  34. 34.One bottle of oil holds 3.1 L. How many L do 10 of them make in all? =
  35. 35.3.1 × 0.8 =
  36. 36.One roll of ribbon has 1.9 m. How many m do 12 of them make in all? =
  37. 37.1/7 × 2/7 =
  38. 38.23.4 ÷ 4 =
  39. 39.1/5 × 14 =
  40. 40.0.4 × 0.5 =

Answer key

  1. 10/3
  2. 4.62
  3. 5/4
  4. 0.83
  5. 3.81
  6. 7/72
  7. 3/32
  8. 51.6
  9. 0.4
  10. 6.93
  11. 18/7
  12. 2/7
  13. 7/45
  14. 25/56
  15. 1/3
  16. 3/20
  17. 25/7
  18. 6.6
  19. 21.5
  20. 4.45
  21. 35/8
  22. 9/14
  23. 5/36
  24. 3/7
  25. 5.82
  26. 9/5
  27. 7/9
  28. 9/7
  29. 8/15
  30. 35/3
  31. 10.5
  32. 5.4
  33. 21/5
  34. 31
  35. 2.48
  36. 22.8
  37. 2/49
  38. 5.85
  39. 14/5
  40. 0.2

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