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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 503 · 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. 1.9.9 ÷ 0.9 =
  2. 2.1.6 × 0.9 =
  3. 3.One bottle of oil holds 3.4 L. How many L do 7 of them make in all? =
  4. 4.2/9 ÷ 7/8 =
  5. 5.2/7 × 3 =
  6. 6.3/7 ÷ 1/9 =
  7. 7.2/3 × 2/3 =
  8. 8.7/9 × 7/8 =
  9. 9.7.7 × 0.6 =
  10. 10.One packet of rice weighs 6.2 kg. How many kg do 4 of them make in all? =
  11. 11.2.66 ÷ 2 =
  12. 12.0.54 ÷ 2 =
  13. 13.40.32 ÷ 8 =
  14. 14.8.2 × 0.4 =
  15. 15.3/8 × 1/4 =
  16. 16.3.5 ÷ 0.5 =
  17. 17.3.6 ÷ 0.6 =
  18. 18.1/5 × 1/7 =
  19. 19.1/5 × 12 =
  20. 20.1.6 ÷ 0.8 =
  21. 21.3/4 × 5 =
  22. 22.2.7 ÷ 0.3 =
  23. 23.3/7 × 4/7 =
  24. 24.4.7 × 0.5 =
  25. 25.One roll of ribbon has 8.4 m. How many m do 9 of them make in all? =
  26. 26.One bag of potatoes weighs 3.4 kg. How many kg do 8 of them make in all? =
  27. 27.3/8 × 3 =
  28. 28.6.2 × 0.3 =
  29. 29.One bottle of oil holds 4.1 L. How many L do 3 of them make in all? =
  30. 30.1.2 ÷ 0.2 =
  31. 31.2/5 × 2/3 =
  32. 32.10 ÷ 8 =
  33. 33.2.4 ÷ 0.4 =
  34. 34.5/6 × 1/5 =
  35. 35.2/5 × 2/7 =
  36. 36.One jug of milk holds 1.8 L. How many L do 2 of them make in all? =
  37. 37.3/8 ÷ 1/4 =
  38. 38.2/9 ÷ 2/5 =
  39. 39.6/7 × 3 =
  40. 40.4/5 × 2/3 =

Answer key

  1. 11
  2. 1.44
  3. 23.8
  4. 16/63
  5. 6/7
  6. 27/7
  7. 4/9
  8. 49/72
  9. 4.62
  10. 24.8
  11. 1.33
  12. 0.27
  13. 5.04
  14. 3.28
  15. 3/32
  16. 7
  17. 6
  18. 1/35
  19. 12/5
  20. 2
  21. 15/4
  22. 9
  23. 12/49
  24. 2.35
  25. 75.6
  26. 27.2
  27. 9/8
  28. 1.86
  29. 12.3
  30. 6
  31. 4/15
  32. 1.25
  33. 6
  34. 1/6
  35. 4/35
  36. 3.6
  37. 3/2
  38. 5/9
  39. 18/7
  40. 8/15

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