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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 506 · 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. 1.6/7 ÷ 2/9 =
  2. 2.One bag of potatoes weighs 7 kg. How many kg do 7 of them make in all? =
  3. 3.7/8 × 3/4 =
  4. 4.One bag of potatoes weighs 5.2 kg. How many kg do 3 of them make in all? =
  5. 5.1/6 × 2/9 =
  6. 6.9.48 ÷ 4 =
  7. 7.One bag of potatoes weighs 4.7 kg. How many kg do 7 of them make in all? =
  8. 8.5/9 × 2/3 =
  9. 9.26.48 ÷ 4 =
  10. 10.5/8 × 1/8 =
  11. 11.1/6 × 6 =
  12. 12.5/7 ÷ 1/7 =
  13. 13.One bottle of oil holds 1.1 L. How many L do 12 of them make in all? =
  14. 14.1.8 ÷ 0.3 =
  15. 15.4/7 × 10 =
  16. 16.One jug of milk holds 1.2 L. How many L do 3 of them make in all? =
  17. 17.1/4 × 5 =
  18. 18.2/5 × 13 =
  19. 19.2/7 × 4 =
  20. 20.1/7 × 5/8 =
  21. 21.One roll of ribbon has 9.4 m. How many m do 2 of them make in all? =
  22. 22.6.38 ÷ 2 =
  23. 23.2/3 ÷ 2/9 =
  24. 24.4.9 ÷ 0.7 =
  25. 25.1/8 × 1/3 =
  26. 26.0.7 × 0.2 =
  27. 27.3/8 ÷ 5/9 =
  28. 28.7.1 × 0.7 =
  29. 29.7/9 × 7 =
  30. 30.One packet of rice weighs 5.3 kg. How many kg do 9 of them make in all? =
  31. 31.8.1 ÷ 0.9 =
  32. 32.15.58 ÷ 2 =
  33. 33.One bottle of oil holds 4.5 L. How many L do 2 of them make in all? =
  34. 34.9.38 ÷ 2 =
  35. 35.4.8 ÷ 0.6 =
  36. 36.7.9 × 0.6 =
  37. 37.3.6 × 0.6 =
  38. 38.5/6 × 10 =
  39. 39.6/7 × 3/8 =
  40. 40.7/9 × 5 =

Answer key

  1. 27/7
  2. 49
  3. 21/32
  4. 15.6
  5. 1/27
  6. 2.37
  7. 32.9
  8. 10/27
  9. 6.62
  10. 5/64
  11. 1
  12. 5
  13. 13.2
  14. 6
  15. 40/7
  16. 3.6
  17. 5/4
  18. 26/5
  19. 8/7
  20. 5/56
  21. 18.8
  22. 3.19
  23. 3
  24. 7
  25. 1/24
  26. 0.14
  27. 27/40
  28. 4.97
  29. 49/9
  30. 47.7
  31. 9
  32. 7.79
  33. 9
  34. 4.69
  35. 8
  36. 4.74
  37. 2.16
  38. 25/3
  39. 9/28
  40. 35/9

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