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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 322 · 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.One roll of ribbon has 9.2 m. How many m do 4 of them make in all? =
  2. 2.One bag of potatoes weighs 9.9 kg. How many kg do 2 of them make in all? =
  3. 3.One roll of ribbon has 1.1 m. How many m do 11 of them make in all? =
  4. 4.1/3 × 13 =
  5. 5.1/8 × 7 =
  6. 6.1/7 × 2 =
  7. 7.One roll of ribbon has 1.9 m. How many m do 10 of them make in all? =
  8. 8.1.2 ÷ 0.4 =
  9. 9.One packet of rice weighs 8.8 kg. How many kg do 11 of them make in all? =
  10. 10.76.8 ÷ 8 =
  11. 11.3.6 ÷ 0.4 =
  12. 12.3/4 ÷ 1/3 =
  13. 13.7.9 × 0.3 =
  14. 14.4 ÷ 0.5 =
  15. 15.5/9 ÷ 3/4 =
  16. 16.5.5 × 0.8 =
  17. 17.One jug of milk holds 3.8 L. How many L do 7 of them make in all? =
  18. 18.1.86 ÷ 2 =
  19. 19.1/9 ÷ 5/7 =
  20. 20.2/7 × 5 =
  21. 21.One bottle of oil holds 2.9 L. How many L do 7 of them make in all? =
  22. 22.5/6 × 3/4 =
  23. 23.4/7 ÷ 4/7 =
  24. 24.1/3 × 8 =
  25. 25.One bottle of oil holds 9.8 L. How many L do 3 of them make in all? =
  26. 26.5/7 × 1/2 =
  27. 27.14.8 ÷ 2 =
  28. 28.5.5 × 0.5 =
  29. 29.One bag of potatoes weighs 1.8 kg. How many kg do 6 of them make in all? =
  30. 30.0.4 ÷ 0.2 =
  31. 31.1/4 × 2 =
  32. 32.4 ÷ 0.8 =
  33. 33.1/4 ÷ 5/9 =
  34. 34.8.6 × 0.4 =
  35. 35.One roll of ribbon has 3.6 m. How many m do 11 of them make in all? =
  36. 36.1/3 × 7/9 =
  37. 37.2/3 ÷ 3/4 =
  38. 38.1.6 × 0.3 =
  39. 39.16.72 ÷ 8 =
  40. 40.1/2 × 1/2 =

Answer key

  1. 36.8
  2. 19.8
  3. 12.1
  4. 13/3
  5. 7/8
  6. 2/7
  7. 19
  8. 3
  9. 96.8
  10. 9.6
  11. 9
  12. 9/4
  13. 2.37
  14. 8
  15. 20/27
  16. 4.4
  17. 26.6
  18. 0.93
  19. 7/45
  20. 10/7
  21. 20.3
  22. 5/8
  23. 1
  24. 8/3
  25. 29.4
  26. 5/14
  27. 7.4
  28. 2.75
  29. 10.8
  30. 2
  31. 1/2
  32. 5
  33. 9/20
  34. 3.44
  35. 39.6
  36. 7/27
  37. 8/9
  38. 0.48
  39. 2.09
  40. 1/4

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