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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 99 · 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 × 7/9 =
  2. 2.6.3 ÷ 0.7 =
  3. 3.3/5 × 4/9 =
  4. 4.One roll of ribbon has 7.4 m. How many m do 7 of them make in all? =
  5. 5.3/7 ÷ 7/9 =
  6. 6.4.24 ÷ 8 =
  7. 7.One bag of potatoes weighs 6.2 kg. How many kg do 10 of them make in all? =
  8. 8.5/7 ÷ 1/2 =
  9. 9.4/7 ÷ 4/9 =
  10. 10.4.4 × 0.7 =
  11. 11.0.1 × 0.2 =
  12. 12.1/9 × 15 =
  13. 13.4/5 × 6 =
  14. 14.One jug of milk holds 9.7 L. How many L do 10 of them make in all? =
  15. 15.5/6 × 14 =
  16. 16.2/7 × 2/5 =
  17. 17.2/3 × 1/5 =
  18. 18.One bottle of oil holds 1.6 L. How many L do 11 of them make in all? =
  19. 19.6/7 × 5/7 =
  20. 20.3.6 × 0.8 =
  21. 21.3/8 × 5 =
  22. 22.8.34 ÷ 2 =
  23. 23.5/6 × 4 =
  24. 24.3/4 × 1/7 =
  25. 25.5/9 ÷ 1/3 =
  26. 26.2/3 × 2 =
  27. 27.8.24 ÷ 2 =
  28. 28.4/9 ÷ 5/8 =
  29. 29.7/8 × 8/9 =
  30. 30.24.4 ÷ 8 =
  31. 31.5.5 ÷ 0.5 =
  32. 32.7.2 ÷ 0.6 =
  33. 33.5/7 × 7 =
  34. 34.1/8 × 2/9 =
  35. 35.1/5 × 2 =
  36. 36.1/4 × 4/5 =
  37. 37.2/9 × 1/3 =
  38. 38.0.1 × 0.7 =
  39. 39.3/4 × 7 =
  40. 40.One bag of potatoes weighs 8.2 kg. How many kg do 8 of them make in all? =

Answer key

  1. 14/81
  2. 9
  3. 4/15
  4. 51.8
  5. 27/49
  6. 0.53
  7. 62
  8. 10/7
  9. 9/7
  10. 3.08
  11. 0.02
  12. 5/3
  13. 24/5
  14. 97
  15. 35/3
  16. 4/35
  17. 2/15
  18. 17.6
  19. 30/49
  20. 2.88
  21. 15/8
  22. 4.17
  23. 10/3
  24. 3/28
  25. 5/3
  26. 4/3
  27. 4.12
  28. 32/45
  29. 7/9
  30. 3.05
  31. 11
  32. 12
  33. 5
  34. 1/36
  35. 2/5
  36. 1/5
  37. 2/27
  38. 0.07
  39. 21/4
  40. 65.6

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