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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 90 · 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. 1.4/5 × 4/7 =
  2. 2.1/5 ÷ 6/7 =
  3. 3.One packet of rice weighs 2.1 kg. How many kg do 10 of them make in all? =
  4. 4.3/4 ÷ 2/3 =
  5. 5.4/7 × 1/4 =
  6. 6.3/7 × 3/7 =
  7. 7.3/4 × 1/3 =
  8. 8.4/7 × 9 =
  9. 9.2/5 × 3/7 =
  10. 10.1/8 × 1/8 =
  11. 11.4.8 ÷ 0.4 =
  12. 12.4/5 × 12 =
  13. 13.2.1 × 0.5 =
  14. 14.One bag of potatoes weighs 7.1 kg. How many kg do 9 of them make in all? =
  15. 15.3.1 × 0.6 =
  16. 16.1.5 × 0.4 =
  17. 17.4/7 ÷ 3/7 =
  18. 18.2.1 ÷ 0.7 =
  19. 19.7 ÷ 0.7 =
  20. 20.10.8 ÷ 0.9 =
  21. 21.2.3 × 0.9 =
  22. 22.39.2 ÷ 8 =
  23. 23.3/5 ÷ 7/9 =
  24. 24.8.8 ÷ 0.8 =
  25. 25.7/8 × 8 =
  26. 26.One jug of milk holds 2.1 L. How many L do 9 of them make in all? =
  27. 27.4/7 × 5/8 =
  28. 28.1/4 × 2/9 =
  29. 29.34.5 ÷ 5 =
  30. 30.8.1 ÷ 5 =
  31. 31.3/7 ÷ 2/7 =
  32. 32.One packet of rice weighs 8 kg. How many kg do 7 of them make in all? =
  33. 33.7/9 × 1/4 =
  34. 34.1/9 × 3/5 =
  35. 35.12.74 ÷ 2 =
  36. 36.8.1 ÷ 0.9 =
  37. 37.One packet of rice weighs 2 kg. How many kg do 9 of them make in all? =
  38. 38.11.18 ÷ 2 =
  39. 39.1.1 × 0.6 =
  40. 40.1/8 × 5 =

Answer key

  1. 16/35
  2. 7/30
  3. 21
  4. 9/8
  5. 1/7
  6. 9/49
  7. 1/4
  8. 36/7
  9. 6/35
  10. 1/64
  11. 12
  12. 48/5
  13. 1.05
  14. 63.9
  15. 1.86
  16. 0.6
  17. 4/3
  18. 3
  19. 10
  20. 12
  21. 2.07
  22. 4.9
  23. 27/35
  24. 11
  25. 7
  26. 18.9
  27. 5/14
  28. 1/18
  29. 6.9
  30. 1.62
  31. 3/2
  32. 56
  33. 7/36
  34. 1/15
  35. 6.37
  36. 9
  37. 18
  38. 5.59
  39. 0.66
  40. 5/8

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