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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 34 · 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. 1.1/2 × 8 =
  2. 2.7/9 × 3 =
  3. 3.2/5 × 11 =
  4. 4.One roll of ribbon has 8.1 m. How many m do 11 of them make in all? =
  5. 5.5/9 × 11 =
  6. 6.5.38 ÷ 2 =
  7. 7.36.2 ÷ 4 =
  8. 8.15.8 ÷ 4 =
  9. 9.One jug of milk holds 4.3 L. How many L do 5 of them make in all? =
  10. 10.4.1 × 0.3 =
  11. 11.1/2 ÷ 3/4 =
  12. 12.1/6 ÷ 1/5 =
  13. 13.3/7 × 12 =
  14. 14.1.4 × 0.2 =
  15. 15.0.3 × 0.5 =
  16. 16.4/9 × 2/3 =
  17. 17.4/5 × 1/3 =
  18. 18.1/7 × 2/9 =
  19. 19.7.6 × 0.6 =
  20. 20.3/8 ÷ 7/9 =
  21. 21.4/7 ÷ 4/7 =
  22. 22.One bottle of oil holds 7.5 L. How many L do 12 of them make in all? =
  23. 23.1/8 × 14 =
  24. 24.1/2 ÷ 1/9 =
  25. 25.2 ÷ 0.5 =
  26. 26.6.85 ÷ 5 =
  27. 27.7/8 ÷ 2/9 =
  28. 28.11.12 ÷ 2 =
  29. 29.One roll of ribbon has 2.2 m. How many m do 6 of them make in all? =
  30. 30.One bag of potatoes weighs 5.8 kg. How many kg do 11 of them make in all? =
  31. 31.5.2 × 0.5 =
  32. 32.4/9 × 7/8 =
  33. 33.1/5 × 13 =
  34. 34.5/6 ÷ 2/7 =
  35. 35.35.68 ÷ 8 =
  36. 36.6.8 × 0.3 =
  37. 37.68.72 ÷ 8 =
  38. 38.2/3 × 9 =
  39. 39.One bottle of oil holds 8.8 L. How many L do 2 of them make in all? =
  40. 40.3/7 × 10 =

Answer key

  1. 4
  2. 7/3
  3. 22/5
  4. 89.1
  5. 55/9
  6. 2.69
  7. 9.05
  8. 3.95
  9. 21.5
  10. 1.23
  11. 2/3
  12. 5/6
  13. 36/7
  14. 0.28
  15. 0.15
  16. 8/27
  17. 4/15
  18. 2/63
  19. 4.56
  20. 27/56
  21. 1
  22. 90
  23. 7/4
  24. 9/2
  25. 4
  26. 1.37
  27. 63/16
  28. 5.56
  29. 13.2
  30. 63.8
  31. 2.6
  32. 7/18
  33. 13/5
  34. 35/12
  35. 4.46
  36. 2.04
  37. 8.59
  38. 6
  39. 17.6
  40. 30/7

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