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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 98 · 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. 2.7.06 ÷ 2 =
  3. 3.One roll of ribbon has 9.8 m. How many m do 12 of them make in all? =
  4. 4.One bag of potatoes weighs 1.7 kg. How many kg do 8 of them make in all? =
  5. 5.18.05 ÷ 5 =
  6. 6.2 ÷ 0.5 =
  7. 7.1/3 ÷ 5/9 =
  8. 8.9.9 ÷ 0.9 =
  9. 9.2.8 ÷ 0.7 =
  10. 10.20.96 ÷ 8 =
  11. 11.5.7 × 0.4 =
  12. 12.1/3 × 6 =
  13. 13.One jug of milk holds 8.4 L. How many L do 2 of them make in all? =
  14. 14.3/8 × 2/3 =
  15. 15.1/2 × 2/5 =
  16. 16.7.7 × 0.3 =
  17. 17.4/7 × 6 =
  18. 18.3.4 × 0.5 =
  19. 19.1/3 × 3 =
  20. 20.2/3 × 2/5 =
  21. 21.3/7 × 4/5 =
  22. 22.5.2 × 0.8 =
  23. 23.5/8 × 11 =
  24. 24.1/4 ÷ 5/8 =
  25. 25.24.68 ÷ 4 =
  26. 26.29.95 ÷ 5 =
  27. 27.One jug of milk holds 6.2 L. How many L do 3 of them make in all? =
  28. 28.3.6 ÷ 0.3 =
  29. 29.5/9 × 7 =
  30. 30.4.4 ÷ 0.4 =
  31. 31.1/9 × 7/8 =
  32. 32.5/8 × 15 =
  33. 33.7/9 × 13 =
  34. 34.5/6 × 9 =
  35. 35.2.1 × 0.2 =
  36. 36.1/8 × 10 =
  37. 37.5/9 × 2/3 =
  38. 38.1/3 ÷ 8/9 =
  39. 39.2/9 ÷ 1/5 =
  40. 40.8.7 × 0.8 =

Answer key

  1. 4
  2. 3.53
  3. 117.6
  4. 13.6
  5. 3.61
  6. 4
  7. 3/5
  8. 11
  9. 4
  10. 2.62
  11. 2.28
  12. 2
  13. 16.8
  14. 1/4
  15. 1/5
  16. 2.31
  17. 24/7
  18. 1.7
  19. 1
  20. 4/15
  21. 12/35
  22. 4.16
  23. 55/8
  24. 2/5
  25. 6.17
  26. 5.99
  27. 18.6
  28. 12
  29. 35/9
  30. 11
  31. 7/72
  32. 75/8
  33. 91/9
  34. 15/2
  35. 0.42
  36. 5/4
  37. 10/27
  38. 3/8
  39. 10/9
  40. 6.96

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