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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 270 · 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. 1.2/3 ÷ 6/7 =
  2. 2.1.5 ÷ 0.3 =
  3. 3.5/9 × 3/4 =
  4. 4.2.4 ÷ 0.2 =
  5. 5.3.2 ÷ 0.4 =
  6. 6.4/5 ÷ 7/8 =
  7. 7.8/9 × 6 =
  8. 8.1.8 ÷ 0.2 =
  9. 9.3.6 ÷ 0.9 =
  10. 10.5/6 ÷ 5/9 =
  11. 11.3.3 ÷ 0.3 =
  12. 12.One jug of milk holds 4.9 L. How many L do 5 of them make in all? =
  13. 13.3/4 × 14 =
  14. 14.1/9 × 5 =
  15. 15.4.8 ÷ 0.8 =
  16. 16.One bag of potatoes weighs 1.9 kg. How many kg do 7 of them make in all? =
  17. 17.5/6 ÷ 1/3 =
  18. 18.39.68 ÷ 4 =
  19. 19.3/4 × 8/9 =
  20. 20.3/5 × 3/7 =
  21. 21.5 ÷ 0.5 =
  22. 22.23.08 ÷ 4 =
  23. 23.5.6 × 0.2 =
  24. 24.1/9 × 3/7 =
  25. 25.1/8 ÷ 2/7 =
  26. 26.1 ÷ 0.5 =
  27. 27.0.9 × 0.7 =
  28. 28.One bottle of oil holds 6.9 L. How many L do 5 of them make in all? =
  29. 29.4/5 × 12 =
  30. 30.One bottle of oil holds 9.1 L. How many L do 12 of them make in all? =
  31. 31.4.9 ÷ 0.7 =
  32. 32.1/3 × 12 =
  33. 33.35.72 ÷ 4 =
  34. 34.3/5 × 3 =
  35. 35.4/7 × 10 =
  36. 36.1/9 ÷ 7/8 =
  37. 37.2.4 ÷ 0.6 =
  38. 38.3/7 ÷ 5/7 =
  39. 39.8.1 × 0.3 =
  40. 40.One jug of milk holds 1.7 L. How many L do 10 of them make in all? =

Answer key

  1. 7/9
  2. 5
  3. 5/12
  4. 12
  5. 8
  6. 32/35
  7. 16/3
  8. 9
  9. 4
  10. 3/2
  11. 11
  12. 24.5
  13. 21/2
  14. 5/9
  15. 6
  16. 13.3
  17. 5/2
  18. 9.92
  19. 2/3
  20. 9/35
  21. 10
  22. 5.77
  23. 1.12
  24. 1/21
  25. 7/16
  26. 2
  27. 0.63
  28. 34.5
  29. 48/5
  30. 109.2
  31. 7
  32. 4
  33. 8.93
  34. 9/5
  35. 40/7
  36. 8/63
  37. 4
  38. 3/5
  39. 2.43
  40. 17

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