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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 43 · 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. 1.1/3 × 4 =
  2. 2.One bag of potatoes weighs 4.3 kg. How many kg do 12 of them make in all? =
  3. 3.6.2 × 0.6 =
  4. 4.1/5 × 4/7 =
  5. 5.1/7 × 7/9 =
  6. 6.20.8 ÷ 8 =
  7. 7.29.6 ÷ 4 =
  8. 8.1/3 ÷ 3/8 =
  9. 9.14.56 ÷ 2 =
  10. 10.5/7 × 14 =
  11. 11.8.24 ÷ 4 =
  12. 12.One packet of rice weighs 3.5 kg. How many kg do 10 of them make in all? =
  13. 13.1/2 ÷ 3/8 =
  14. 14.7/9 × 4 =
  15. 15.5.8 × 0.9 =
  16. 16.1/4 × 5 =
  17. 17.One packet of rice weighs 9 kg. How many kg do 3 of them make in all? =
  18. 18.3.6 ÷ 0.3 =
  19. 19.2.6 × 0.9 =
  20. 20.One bag of potatoes weighs 6.3 kg. How many kg do 8 of them make in all? =
  21. 21.8.7 ÷ 5 =
  22. 22.1.9 × 0.4 =
  23. 23.3/4 ÷ 8/9 =
  24. 24.13.6 ÷ 2 =
  25. 25.5.4 ÷ 0.9 =
  26. 26.6.6 × 0.7 =
  27. 27.3/5 × 3 =
  28. 28.2 ÷ 0.4 =
  29. 29.2/5 × 14 =
  30. 30.One bottle of oil holds 5.1 L. How many L do 11 of them make in all? =
  31. 31.One packet of rice weighs 2.8 kg. How many kg do 7 of them make in all? =
  32. 32.1/8 ÷ 5/7 =
  33. 33.One jug of milk holds 9.9 L. How many L do 9 of them make in all? =
  34. 34.3.9 × 0.6 =
  35. 35.4/9 × 4 =
  36. 36.10 ÷ 5 =
  37. 37.2 ÷ 0.5 =
  38. 38.2/7 ÷ 4/9 =
  39. 39.6.5 × 0.5 =
  40. 40.2/7 ÷ 1/8 =

Answer key

  1. 4/3
  2. 51.6
  3. 3.72
  4. 4/35
  5. 1/9
  6. 2.6
  7. 7.4
  8. 8/9
  9. 7.28
  10. 10
  11. 2.06
  12. 35
  13. 4/3
  14. 28/9
  15. 5.22
  16. 5/4
  17. 27
  18. 12
  19. 2.34
  20. 50.4
  21. 1.74
  22. 0.76
  23. 27/32
  24. 6.8
  25. 6
  26. 4.62
  27. 9/5
  28. 5
  29. 28/5
  30. 56.1
  31. 19.6
  32. 7/40
  33. 89.1
  34. 2.34
  35. 16/9
  36. 2
  37. 4
  38. 9/14
  39. 3.25
  40. 16/7

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