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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 255 · 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. 1.2/5 × 10 =
  2. 2.1.2 ÷ 0.4 =
  3. 3.9.9 ÷ 0.9 =
  4. 4.1/5 × 6/7 =
  5. 5.8.8 ÷ 0.8 =
  6. 6.2/3 × 11 =
  7. 7.3/8 ÷ 1/5 =
  8. 8.4/9 ÷ 3/5 =
  9. 9.5/7 ÷ 5/7 =
  10. 10.1/2 × 3/5 =
  11. 11.5.9 × 0.5 =
  12. 12.2.3 × 0.4 =
  13. 13.One bag of potatoes weighs 7.1 kg. How many kg do 3 of them make in all? =
  14. 14.5/6 × 2/9 =
  15. 15.1/7 ÷ 2/5 =
  16. 16.4/5 × 13 =
  17. 17.7/8 ÷ 5/9 =
  18. 18.9.7 × 0.9 =
  19. 19.6/7 ÷ 5/7 =
  20. 20.3.2 × 0.3 =
  21. 21.22.45 ÷ 5 =
  22. 22.4.04 ÷ 4 =
  23. 23.8/9 ÷ 2/9 =
  24. 24.One bottle of oil holds 9.9 L. How many L do 9 of them make in all? =
  25. 25.4/5 × 5 =
  26. 26.2/9 ÷ 5/7 =
  27. 27.2.24 ÷ 8 =
  28. 28.0.9 ÷ 0.3 =
  29. 29.3 ÷ 0.6 =
  30. 30.4/9 × 1/8 =
  31. 31.3/4 × 9 =
  32. 32.1/8 × 8 =
  33. 33.7.2 ÷ 0.6 =
  34. 34.4.5 ÷ 0.5 =
  35. 35.1.9 × 0.7 =
  36. 36.3/4 ÷ 6/7 =
  37. 37.One packet of rice weighs 7.6 kg. How many kg do 10 of them make in all? =
  38. 38.1/9 ÷ 8/9 =
  39. 39.3/7 ÷ 2/5 =
  40. 40.One bag of potatoes weighs 5.7 kg. How many kg do 2 of them make in all? =

Answer key

  1. 4
  2. 3
  3. 11
  4. 6/35
  5. 11
  6. 22/3
  7. 15/8
  8. 20/27
  9. 1
  10. 3/10
  11. 2.95
  12. 0.92
  13. 21.3
  14. 5/27
  15. 5/14
  16. 52/5
  17. 63/40
  18. 8.73
  19. 6/5
  20. 0.96
  21. 4.49
  22. 1.01
  23. 4
  24. 89.1
  25. 4
  26. 14/45
  27. 0.28
  28. 3
  29. 5
  30. 1/18
  31. 27/4
  32. 1
  33. 12
  34. 9
  35. 1.33
  36. 7/8
  37. 76
  38. 1/8
  39. 15/14
  40. 11.4

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