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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 388 · 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. 1.1/4 × 12 =
  2. 2.8.1 × 0.6 =
  3. 3.17.04 ÷ 8 =
  4. 4.3/8 ÷ 1/6 =
  5. 5.1.3 × 0.4 =
  6. 6.One bag of potatoes weighs 4.5 kg. How many kg do 2 of them make in all? =
  7. 7.7/9 × 2/9 =
  8. 8.7/8 ÷ 3/5 =
  9. 9.5/9 × 15 =
  10. 10.5/9 ÷ 7/9 =
  11. 11.7.6 × 0.5 =
  12. 12.2/5 × 7/8 =
  13. 13.3/5 ÷ 1/7 =
  14. 14.1/3 × 4/9 =
  15. 15.7.3 × 0.9 =
  16. 16.1.8 × 0.3 =
  17. 17.2/5 × 6 =
  18. 18.One bag of potatoes weighs 1.4 kg. How many kg do 10 of them make in all? =
  19. 19.2/7 × 1/9 =
  20. 20.One bottle of oil holds 9 L. How many L do 12 of them make in all? =
  21. 21.1/4 × 2/3 =
  22. 22.24.6 ÷ 4 =
  23. 23.2/7 × 1/5 =
  24. 24.One roll of ribbon has 3.9 m. How many m do 4 of them make in all? =
  25. 25.One roll of ribbon has 2.4 m. How many m do 4 of them make in all? =
  26. 26.5/9 × 8/9 =
  27. 27.2.7 ÷ 0.3 =
  28. 28.0.6 × 0.3 =
  29. 29.7/8 × 3/5 =
  30. 30.6.9 ÷ 5 =
  31. 31.3/8 × 9 =
  32. 32.4/7 × 14 =
  33. 33.32.56 ÷ 8 =
  34. 34.1/2 × 13 =
  35. 35.2/3 × 6 =
  36. 36.12.44 ÷ 2 =
  37. 37.1/5 × 3 =
  38. 38.4/7 × 4/7 =
  39. 39.3/4 × 8/9 =
  40. 40.1/9 × 14 =

Answer key

  1. 3
  2. 4.86
  3. 2.13
  4. 9/4
  5. 0.52
  6. 9
  7. 14/81
  8. 35/24
  9. 25/3
  10. 5/7
  11. 3.8
  12. 7/20
  13. 21/5
  14. 4/27
  15. 6.57
  16. 0.54
  17. 12/5
  18. 14
  19. 2/63
  20. 108
  21. 1/6
  22. 6.15
  23. 2/35
  24. 15.6
  25. 9.6
  26. 40/81
  27. 9
  28. 0.18
  29. 21/40
  30. 1.38
  31. 27/8
  32. 8
  33. 4.07
  34. 13/2
  35. 4
  36. 6.22
  37. 3/5
  38. 16/49
  39. 2/3
  40. 14/9

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