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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 228 · 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. 1.1/7 × 7 =
  2. 2.5.4 ÷ 0.6 =
  3. 3.One roll of ribbon has 6.9 m. How many m do 12 of them make in all? =
  4. 4.28.3 ÷ 5 =
  5. 5.3/8 × 7/8 =
  6. 6.0.7 × 0.8 =
  7. 7.3/4 × 6 =
  8. 8.One roll of ribbon has 3.6 m. How many m do 6 of them make in all? =
  9. 9.35.45 ÷ 5 =
  10. 10.2/3 × 12 =
  11. 11.2/9 ÷ 3/4 =
  12. 12.One bag of potatoes weighs 7.7 kg. How many kg do 12 of them make in all? =
  13. 13.2.8 × 0.4 =
  14. 14.21.15 ÷ 5 =
  15. 15.One packet of rice weighs 7.3 kg. How many kg do 12 of them make in all? =
  16. 16.6.9 × 0.6 =
  17. 17.9.32 ÷ 4 =
  18. 18.1.5 × 0.8 =
  19. 19.One bottle of oil holds 9.5 L. How many L do 2 of them make in all? =
  20. 20.3/5 ÷ 6/7 =
  21. 21.1/8 × 1/4 =
  22. 22.46.25 ÷ 5 =
  23. 23.4/5 ÷ 3/4 =
  24. 24.5/8 × 1/4 =
  25. 25.1/3 ÷ 4/7 =
  26. 26.43.9 ÷ 5 =
  27. 27.5/7 × 4/9 =
  28. 28.4/7 × 3/7 =
  29. 29.1.2 ÷ 0.4 =
  30. 30.6.8 ÷ 5 =
  31. 31.1/5 × 2/7 =
  32. 32.One bottle of oil holds 8.8 L. How many L do 11 of them make in all? =
  33. 33.8/9 × 11 =
  34. 34.One bag of potatoes weighs 5.4 kg. How many kg do 4 of them make in all? =
  35. 35.8/9 ÷ 1/8 =
  36. 36.1/7 ÷ 1/4 =
  37. 37.7/9 × 4/9 =
  38. 38.1/3 × 11 =
  39. 39.4/9 × 7 =
  40. 40.61.92 ÷ 8 =

Answer key

  1. 1
  2. 9
  3. 82.8
  4. 5.66
  5. 21/64
  6. 0.56
  7. 9/2
  8. 21.6
  9. 7.09
  10. 8
  11. 8/27
  12. 92.4
  13. 1.12
  14. 4.23
  15. 87.6
  16. 4.14
  17. 2.33
  18. 1.2
  19. 19
  20. 7/10
  21. 1/32
  22. 9.25
  23. 16/15
  24. 5/32
  25. 7/12
  26. 8.78
  27. 20/63
  28. 12/49
  29. 3
  30. 1.36
  31. 2/35
  32. 96.8
  33. 88/9
  34. 21.6
  35. 64/9
  36. 4/7
  37. 28/81
  38. 11/3
  39. 28/9
  40. 7.74

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