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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 128 · 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 × 4 =
  2. 2.2.4 × 0.9 =
  3. 3.18.16 ÷ 4 =
  4. 4.One roll of ribbon has 2.2 m. How many m do 4 of them make in all? =
  5. 5.8/9 × 10 =
  6. 6.4/7 × 6/7 =
  7. 7.1/4 × 1/3 =
  8. 8.7/8 × 10 =
  9. 9.1.6 ÷ 0.4 =
  10. 10.2.1 ÷ 0.7 =
  11. 11.One bag of potatoes weighs 1.1 kg. How many kg do 6 of them make in all? =
  12. 12.22.28 ÷ 4 =
  13. 13.1.2 ÷ 0.4 =
  14. 14.1.6 ÷ 0.8 =
  15. 15.5/7 × 3 =
  16. 16.1/8 ÷ 1/4 =
  17. 17.4.8 × 0.2 =
  18. 18.0.1 × 0.6 =
  19. 19.2/5 × 3 =
  20. 20.53.84 ÷ 8 =
  21. 21.4/9 ÷ 2/3 =
  22. 22.35.84 ÷ 8 =
  23. 23.10.82 ÷ 2 =
  24. 24.One packet of rice weighs 8.2 kg. How many kg do 7 of them make in all? =
  25. 25.One jug of milk holds 2.6 L. How many L do 5 of them make in all? =
  26. 26.6/7 ÷ 1/4 =
  27. 27.2/5 × 2/7 =
  28. 28.4/7 ÷ 2/5 =
  29. 29.33.12 ÷ 8 =
  30. 30.6.4 ÷ 0.8 =
  31. 31.1/8 ÷ 2/7 =
  32. 32.10.4 ÷ 8 =
  33. 33.5.4 ÷ 0.6 =
  34. 34.2/3 ÷ 1/2 =
  35. 35.2 ÷ 0.4 =
  36. 36.One bottle of oil holds 7.6 L. How many L do 6 of them make in all? =
  37. 37.1/5 ÷ 7/9 =
  38. 38.3/7 × 1/5 =
  39. 39.7/9 ÷ 8/9 =
  40. 40.0.8 ÷ 0.2 =

Answer key

  1. 2
  2. 2.16
  3. 4.54
  4. 8.8
  5. 80/9
  6. 24/49
  7. 1/12
  8. 35/4
  9. 4
  10. 3
  11. 6.6
  12. 5.57
  13. 3
  14. 2
  15. 15/7
  16. 1/2
  17. 0.96
  18. 0.06
  19. 6/5
  20. 6.73
  21. 2/3
  22. 4.48
  23. 5.41
  24. 57.4
  25. 13
  26. 24/7
  27. 4/35
  28. 10/7
  29. 4.14
  30. 8
  31. 7/16
  32. 1.3
  33. 9
  34. 4/3
  35. 5
  36. 45.6
  37. 9/35
  38. 3/35
  39. 7/8
  40. 4

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