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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 358 · 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. 1.4/5 ÷ 2/9 =
  2. 2.30.8 ÷ 8 =
  3. 3.0.4 × 0.2 =
  4. 4.1/2 × 10 =
  5. 5.11.76 ÷ 4 =
  6. 6.2.8 ÷ 0.4 =
  7. 7.1/4 × 3/4 =
  8. 8.2/3 ÷ 7/9 =
  9. 9.1 ÷ 0.2 =
  10. 10.One bag of potatoes weighs 6.8 kg. How many kg do 5 of them make in all? =
  11. 11.One roll of ribbon has 1.8 m. How many m do 3 of them make in all? =
  12. 12.3/7 × 11 =
  13. 13.1/2 × 8 =
  14. 14.3/8 × 1/9 =
  15. 15.7/9 ÷ 2/5 =
  16. 16.9.2 × 0.7 =
  17. 17.2/5 × 1/9 =
  18. 18.2/5 × 1/3 =
  19. 19.8.1 ÷ 0.9 =
  20. 20.3/7 × 5/9 =
  21. 21.2/3 × 2/3 =
  22. 22.2.8 ÷ 0.7 =
  23. 23.5/6 × 1/7 =
  24. 24.3/5 ÷ 1/3 =
  25. 25.2/3 × 9 =
  26. 26.4/7 ÷ 1/9 =
  27. 27.8.4 × 0.5 =
  28. 28.One jug of milk holds 5.4 L. How many L do 11 of them make in all? =
  29. 29.3/7 × 5/6 =
  30. 30.0.7 × 0.3 =
  31. 31.8 ÷ 0.8 =
  32. 32.1.2 × 0.7 =
  33. 33.3/5 × 7 =
  34. 34.One jug of milk holds 4.4 L. How many L do 3 of them make in all? =
  35. 35.One jug of milk holds 1.6 L. How many L do 9 of them make in all? =
  36. 36.One jug of milk holds 6.4 L. How many L do 2 of them make in all? =
  37. 37.33.52 ÷ 8 =
  38. 38.One packet of rice weighs 3 kg. How many kg do 2 of them make in all? =
  39. 39.8.4 ÷ 0.7 =
  40. 40.3/8 × 8 =

Answer key

  1. 18/5
  2. 3.85
  3. 0.08
  4. 5
  5. 2.94
  6. 7
  7. 3/16
  8. 6/7
  9. 5
  10. 34
  11. 5.4
  12. 33/7
  13. 4
  14. 1/24
  15. 35/18
  16. 6.44
  17. 2/45
  18. 2/15
  19. 9
  20. 5/21
  21. 4/9
  22. 4
  23. 5/42
  24. 9/5
  25. 6
  26. 36/7
  27. 4.2
  28. 59.4
  29. 5/14
  30. 0.21
  31. 10
  32. 0.84
  33. 21/5
  34. 13.2
  35. 14.4
  36. 12.8
  37. 4.19
  38. 6
  39. 12
  40. 3

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