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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 389 · 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. 1.1/6 × 3/7 =
  2. 2.One bag of potatoes weighs 6.8 kg. How many kg do 11 of them make in all? =
  3. 3.5/9 × 4 =
  4. 4.4.8 × 0.6 =
  5. 5.4/9 × 7 =
  6. 6.3/5 × 3/4 =
  7. 7.One packet of rice weighs 5.1 kg. How many kg do 6 of them make in all? =
  8. 8.3/5 × 2 =
  9. 9.1/2 ÷ 1/2 =
  10. 10.3/7 × 3/8 =
  11. 11.1/3 × 7/9 =
  12. 12.6 ÷ 0.6 =
  13. 13.2/7 × 8 =
  14. 14.7.1 × 0.2 =
  15. 15.One jug of milk holds 1.2 L. How many L do 5 of them make in all? =
  16. 16.1.2 × 0.8 =
  17. 17.2/5 × 2/9 =
  18. 18.One roll of ribbon has 9.6 m. How many m do 8 of them make in all? =
  19. 19.45.12 ÷ 8 =
  20. 20.2 ÷ 0.2 =
  21. 21.4/5 × 1/7 =
  22. 22.1 ÷ 0.2 =
  23. 23.5/6 × 3 =
  24. 24.One bottle of oil holds 7.2 L. How many L do 11 of them make in all? =
  25. 25.4/7 × 1/8 =
  26. 26.3/5 × 3/8 =
  27. 27.8.8 × 0.4 =
  28. 28.3/8 ÷ 3/5 =
  29. 29.1/3 × 1/7 =
  30. 30.One jug of milk holds 2.4 L. How many L do 3 of them make in all? =
  31. 31.2.4 ÷ 0.4 =
  32. 32.2/5 × 3 =
  33. 33.1.1 × 0.8 =
  34. 34.5/8 × 5/8 =
  35. 35.1.8 ÷ 0.6 =
  36. 36.0.9 ÷ 0.3 =
  37. 37.2/3 × 7 =
  38. 38.2/9 × 8 =
  39. 39.3/4 × 6 =
  40. 40.One roll of ribbon has 8.2 m. How many m do 8 of them make in all? =

Answer key

  1. 1/14
  2. 74.8
  3. 20/9
  4. 2.88
  5. 28/9
  6. 9/20
  7. 30.6
  8. 6/5
  9. 1
  10. 9/56
  11. 7/27
  12. 10
  13. 16/7
  14. 1.42
  15. 6
  16. 0.96
  17. 4/45
  18. 76.8
  19. 5.64
  20. 10
  21. 4/35
  22. 5
  23. 5/2
  24. 79.2
  25. 1/14
  26. 9/40
  27. 3.52
  28. 5/8
  29. 1/21
  30. 7.2
  31. 6
  32. 6/5
  33. 0.88
  34. 25/64
  35. 3
  36. 3
  37. 14/3
  38. 16/9
  39. 9/2
  40. 65.6

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