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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 104 · 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. 1.2/9 ÷ 4/5 =
  2. 2.2/5 ÷ 4/9 =
  3. 3.5/8 × 5 =
  4. 4.5/9 × 1/8 =
  5. 5.10.8 ÷ 0.9 =
  6. 6.2/7 × 1/9 =
  7. 7.One packet of rice weighs 7.5 kg. How many kg do 9 of them make in all? =
  8. 8.1/7 × 2/7 =
  9. 9.17.36 ÷ 4 =
  10. 10.7/8 × 1/3 =
  11. 11.3/4 × 5/9 =
  12. 12.One bottle of oil holds 9.7 L. How many L do 7 of them make in all? =
  13. 13.1/8 ÷ 1/6 =
  14. 14.4.2 ÷ 0.7 =
  15. 15.6 ÷ 0.6 =
  16. 16.3/4 × 4 =
  17. 17.One bag of potatoes weighs 4.4 kg. How many kg do 12 of them make in all? =
  18. 18.One roll of ribbon has 6.3 m. How many m do 7 of them make in all? =
  19. 19.2/7 ÷ 5/6 =
  20. 20.3/8 × 9 =
  21. 21.1/7 ÷ 6/7 =
  22. 22.2/7 × 13 =
  23. 23.8.8 ÷ 0.8 =
  24. 24.12.54 ÷ 2 =
  25. 25.2/5 × 2 =
  26. 26.One bag of potatoes weighs 3.6 kg. How many kg do 8 of them make in all? =
  27. 27.7.4 ÷ 5 =
  28. 28.One bottle of oil holds 3.1 L. How many L do 9 of them make in all? =
  29. 29.1/5 ÷ 1/4 =
  30. 30.0.6 × 0.4 =
  31. 31.1.4 ÷ 0.7 =
  32. 32.1/7 × 3/4 =
  33. 33.1.3 × 0.8 =
  34. 34.1.9 × 0.6 =
  35. 35.27.15 ÷ 5 =
  36. 36.1/6 ÷ 1/3 =
  37. 37.4 ÷ 0.4 =
  38. 38.1.2 × 0.8 =
  39. 39.2/3 × 5 =
  40. 40.0.9 ÷ 0.3 =

Answer key

  1. 5/18
  2. 9/10
  3. 25/8
  4. 5/72
  5. 12
  6. 2/63
  7. 67.5
  8. 2/49
  9. 4.34
  10. 7/24
  11. 5/12
  12. 67.9
  13. 3/4
  14. 6
  15. 10
  16. 3
  17. 52.8
  18. 44.1
  19. 12/35
  20. 27/8
  21. 1/6
  22. 26/7
  23. 11
  24. 6.27
  25. 4/5
  26. 28.8
  27. 1.48
  28. 27.9
  29. 4/5
  30. 0.24
  31. 2
  32. 3/28
  33. 1.04
  34. 1.14
  35. 5.43
  36. 1/2
  37. 10
  38. 0.96
  39. 10/3
  40. 3

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