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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 86 · 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. 1.38.4 ÷ 4 =
  2. 2.6.7 × 0.9 =
  3. 3.3/4 × 13 =
  4. 4.3/5 × 3/4 =
  5. 5.One jug of milk holds 7 L. How many L do 8 of them make in all? =
  6. 6.17.85 ÷ 5 =
  7. 7.One bottle of oil holds 7.4 L. How many L do 8 of them make in all? =
  8. 8.8.6 × 0.3 =
  9. 9.8.1 × 0.3 =
  10. 10.2/9 × 5/7 =
  11. 11.2.9 × 0.5 =
  12. 12.3/7 × 12 =
  13. 13.5/8 ÷ 1/6 =
  14. 14.5/7 × 2 =
  15. 15.One packet of rice weighs 7 kg. How many kg do 3 of them make in all? =
  16. 16.13.58 ÷ 2 =
  17. 17.1/2 × 3/4 =
  18. 18.4/7 ÷ 7/8 =
  19. 19.3.2 × 0.5 =
  20. 20.6/7 ÷ 1/6 =
  21. 21.1/3 × 3/8 =
  22. 22.16.16 ÷ 4 =
  23. 23.3/8 × 4 =
  24. 24.One packet of rice weighs 9.9 kg. How many kg do 2 of them make in all? =
  25. 25.1/8 × 15 =
  26. 26.1/8 ÷ 4/7 =
  27. 27.3/4 ÷ 4/7 =
  28. 28.One roll of ribbon has 9.7 m. How many m do 11 of them make in all? =
  29. 29.2.76 ÷ 2 =
  30. 30.0.1 × 0.9 =
  31. 31.5.5 × 0.4 =
  32. 32.One bottle of oil holds 5 L. How many L do 6 of them make in all? =
  33. 33.8 ÷ 0.8 =
  34. 34.7.3 × 0.4 =
  35. 35.One jug of milk holds 5.7 L. How many L do 3 of them make in all? =
  36. 36.1/5 × 3/8 =
  37. 37.2/3 × 1/6 =
  38. 38.8.7 × 0.5 =
  39. 39.5/6 × 1/4 =
  40. 40.1.3 × 0.7 =

Answer key

  1. 9.6
  2. 6.03
  3. 39/4
  4. 9/20
  5. 56
  6. 3.57
  7. 59.2
  8. 2.58
  9. 2.43
  10. 10/63
  11. 1.45
  12. 36/7
  13. 15/4
  14. 10/7
  15. 21
  16. 6.79
  17. 3/8
  18. 32/49
  19. 1.6
  20. 36/7
  21. 1/8
  22. 4.04
  23. 3/2
  24. 19.8
  25. 15/8
  26. 7/32
  27. 21/16
  28. 106.7
  29. 1.38
  30. 0.09
  31. 2.2
  32. 30
  33. 10
  34. 2.92
  35. 17.1
  36. 3/40
  37. 1/9
  38. 4.35
  39. 5/24
  40. 0.91

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