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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 365 · 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. 1.1/5 × 14 =
  2. 2.1/3 × 2 =
  3. 3.One bag of potatoes weighs 6.5 kg. How many kg do 3 of them make in all? =
  4. 4.One bag of potatoes weighs 5.5 kg. How many kg do 10 of them make in all? =
  5. 5.7/8 × 14 =
  6. 6.26.45 ÷ 5 =
  7. 7.4 ÷ 0.8 =
  8. 8.1/7 × 2/7 =
  9. 9.7/8 × 5/6 =
  10. 10.8/9 × 1/2 =
  11. 11.One roll of ribbon has 3.5 m. How many m do 9 of them make in all? =
  12. 12.2/3 ÷ 5/7 =
  13. 13.One bag of potatoes weighs 4.1 kg. How many kg do 6 of them make in all? =
  14. 14.5/8 × 7/8 =
  15. 15.1/7 × 3 =
  16. 16.One bag of potatoes weighs 1.7 kg. How many kg do 3 of them make in all? =
  17. 17.30.52 ÷ 4 =
  18. 18.2/5 × 4 =
  19. 19.One bag of potatoes weighs 7.1 kg. How many kg do 2 of them make in all? =
  20. 20.6.3 ÷ 0.9 =
  21. 21.4 ÷ 0.5 =
  22. 22.4/9 ÷ 1/8 =
  23. 23.5/6 × 3/5 =
  24. 24.4.3 × 0.3 =
  25. 25.1/2 × 14 =
  26. 26.3/7 × 3/8 =
  27. 27.2/3 × 2/7 =
  28. 28.0.76 ÷ 2 =
  29. 29.4/7 × 3 =
  30. 30.1/5 × 10 =
  31. 31.1/2 × 1/5 =
  32. 32.5/9 × 8 =
  33. 33.4.62 ÷ 2 =
  34. 34.78.56 ÷ 8 =
  35. 35.4.58 ÷ 2 =
  36. 36.24.6 ÷ 4 =
  37. 37.1/4 ÷ 2/3 =
  38. 38.1/8 × 4/9 =
  39. 39.41.76 ÷ 8 =
  40. 40.3.2 ÷ 0.8 =

Answer key

  1. 14/5
  2. 2/3
  3. 19.5
  4. 55
  5. 49/4
  6. 5.29
  7. 5
  8. 2/49
  9. 35/48
  10. 4/9
  11. 31.5
  12. 14/15
  13. 24.6
  14. 35/64
  15. 3/7
  16. 5.1
  17. 7.63
  18. 8/5
  19. 14.2
  20. 7
  21. 8
  22. 32/9
  23. 1/2
  24. 1.29
  25. 7
  26. 9/56
  27. 4/21
  28. 0.38
  29. 12/7
  30. 2
  31. 1/10
  32. 40/9
  33. 2.31
  34. 9.82
  35. 2.29
  36. 6.15
  37. 3/8
  38. 1/18
  39. 5.22
  40. 4

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