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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 41 · 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. 1.7/8 × 15 =
  2. 2.6/7 × 4/7 =
  3. 3.4/7 × 5 =
  4. 4.One jug of milk holds 2.9 L. How many L do 12 of them make in all? =
  5. 5.One packet of rice weighs 6.3 kg. How many kg do 4 of them make in all? =
  6. 6.4/7 ÷ 5/8 =
  7. 7.2/3 ÷ 8/9 =
  8. 8.1/4 ÷ 2/3 =
  9. 9.2/9 × 2/5 =
  10. 10.1 ÷ 0.2 =
  11. 11.1/2 ÷ 5/9 =
  12. 12.One roll of ribbon has 3.6 m. How many m do 6 of them make in all? =
  13. 13.8 ÷ 8 =
  14. 14.One bottle of oil holds 6.7 L. How many L do 2 of them make in all? =
  15. 15.15.9 ÷ 5 =
  16. 16.7/9 × 10 =
  17. 17.One roll of ribbon has 5 m. How many m do 10 of them make in all? =
  18. 18.0.8 ÷ 0.2 =
  19. 19.1.4 ÷ 0.2 =
  20. 20.2/3 × 1/4 =
  21. 21.2.3 × 0.2 =
  22. 22.1.36 ÷ 4 =
  23. 23.1/8 × 8/9 =
  24. 24.One jug of milk holds 5.9 L. How many L do 6 of them make in all? =
  25. 25.4/5 ÷ 3/7 =
  26. 26.One bottle of oil holds 7.9 L. How many L do 5 of them make in all? =
  27. 27.4/7 × 7/8 =
  28. 28.One jug of milk holds 2.9 L. How many L do 5 of them make in all? =
  29. 29.16.25 ÷ 5 =
  30. 30.6.4 ÷ 0.8 =
  31. 31.2/5 × 11 =
  32. 32.2/7 × 5/7 =
  33. 33.1/6 × 1/9 =
  34. 34.5.6 × 0.4 =
  35. 35.6/7 × 8 =
  36. 36.31.96 ÷ 4 =
  37. 37.1/8 × 5 =
  38. 38.One bottle of oil holds 8.3 L. How many L do 12 of them make in all? =
  39. 39.18.1 ÷ 2 =
  40. 40.7/8 × 3 =

Answer key

  1. 105/8
  2. 24/49
  3. 20/7
  4. 34.8
  5. 25.2
  6. 32/35
  7. 3/4
  8. 3/8
  9. 4/45
  10. 5
  11. 9/10
  12. 21.6
  13. 1
  14. 13.4
  15. 3.18
  16. 70/9
  17. 50
  18. 4
  19. 7
  20. 1/6
  21. 0.46
  22. 0.34
  23. 1/9
  24. 35.4
  25. 28/15
  26. 39.5
  27. 1/2
  28. 14.5
  29. 3.25
  30. 8
  31. 22/5
  32. 10/49
  33. 1/54
  34. 2.24
  35. 48/7
  36. 7.99
  37. 5/8
  38. 99.6
  39. 9.05
  40. 21/8

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