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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 343 · 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. 1.4.2 × 0.6 =
  2. 2.16.64 ÷ 2 =
  3. 3.5/9 × 3 =
  4. 4.1/8 × 1/6 =
  5. 5.1/3 × 1/9 =
  6. 6.1.9 × 0.2 =
  7. 7.0.8 ÷ 0.2 =
  8. 8.0.5 × 0.6 =
  9. 9.One bottle of oil holds 4.7 L. How many L do 7 of them make in all? =
  10. 10.3.5 ÷ 5 =
  11. 11.One packet of rice weighs 1.9 kg. How many kg do 11 of them make in all? =
  12. 12.8.8 ÷ 0.8 =
  13. 13.3/5 ÷ 6/7 =
  14. 14.1/2 ÷ 3/7 =
  15. 15.0.42 ÷ 2 =
  16. 16.1/7 × 1/2 =
  17. 17.1.52 ÷ 8 =
  18. 18.5.7 × 0.2 =
  19. 19.8.2 × 0.4 =
  20. 20.8.6 × 0.2 =
  21. 21.1/7 × 2/9 =
  22. 22.3/4 × 6 =
  23. 23.2/5 × 11 =
  24. 24.2/9 × 3/4 =
  25. 25.3/4 ÷ 5/9 =
  26. 26.7/9 ÷ 1/5 =
  27. 27.2/5 × 7/8 =
  28. 28.One bottle of oil holds 6.1 L. How many L do 11 of them make in all? =
  29. 29.One packet of rice weighs 3.8 kg. How many kg do 12 of them make in all? =
  30. 30.One bag of potatoes weighs 5.1 kg. How many kg do 4 of them make in all? =
  31. 31.1/6 × 3/8 =
  32. 32.5/8 ÷ 3/4 =
  33. 33.1/5 × 10 =
  34. 34.2.16 ÷ 4 =
  35. 35.1/7 × 3/8 =
  36. 36.2.5 × 0.2 =
  37. 37.One roll of ribbon has 3.6 m. How many m do 2 of them make in all? =
  38. 38.8/9 × 8/9 =
  39. 39.27.68 ÷ 4 =
  40. 40.3/8 × 2 =

Answer key

  1. 2.52
  2. 8.32
  3. 5/3
  4. 1/48
  5. 1/27
  6. 0.38
  7. 4
  8. 0.3
  9. 32.9
  10. 0.7
  11. 20.9
  12. 11
  13. 7/10
  14. 7/6
  15. 0.21
  16. 1/14
  17. 0.19
  18. 1.14
  19. 3.28
  20. 1.72
  21. 2/63
  22. 9/2
  23. 22/5
  24. 1/6
  25. 27/20
  26. 35/9
  27. 7/20
  28. 67.1
  29. 45.6
  30. 20.4
  31. 1/16
  32. 5/6
  33. 2
  34. 0.54
  35. 3/56
  36. 0.5
  37. 7.2
  38. 64/81
  39. 6.92
  40. 3/4

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