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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 130 · 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. 1.9.6 × 0.3 =
  2. 2.1/7 × 1/3 =
  3. 3.0.6 × 0.5 =
  4. 4.2.6 × 0.9 =
  5. 5.1/3 × 3 =
  6. 6.2/7 × 1/6 =
  7. 7.One roll of ribbon has 1.6 m. How many m do 10 of them make in all? =
  8. 8.1/2 ÷ 1/3 =
  9. 9.4/7 ÷ 2/7 =
  10. 10.0.9 × 0.2 =
  11. 11.One jug of milk holds 5.6 L. How many L do 9 of them make in all? =
  12. 12.3.6 ÷ 0.6 =
  13. 13.3/5 × 2/7 =
  14. 14.4/9 × 8 =
  15. 15.3 ÷ 0.6 =
  16. 16.1/4 × 10 =
  17. 17.14.2 ÷ 2 =
  18. 18.1.4 ÷ 0.2 =
  19. 19.1.2 ÷ 0.3 =
  20. 20.7/9 × 15 =
  21. 21.24.6 ÷ 5 =
  22. 22.1/3 ÷ 1/9 =
  23. 23.1/3 × 2/5 =
  24. 24.One packet of rice weighs 8.9 kg. How many kg do 8 of them make in all? =
  25. 25.23.92 ÷ 4 =
  26. 26.5.3 × 0.3 =
  27. 27.7.5 × 0.5 =
  28. 28.5.5 × 0.4 =
  29. 29.5/9 ÷ 1/7 =
  30. 30.1/6 ÷ 3/8 =
  31. 31.2/7 × 2/3 =
  32. 32.2.22 ÷ 2 =
  33. 33.One bottle of oil holds 5.8 L. How many L do 6 of them make in all? =
  34. 34.19.88 ÷ 4 =
  35. 35.5/9 × 2/9 =
  36. 36.5/8 ÷ 3/7 =
  37. 37.20.08 ÷ 8 =
  38. 38.One roll of ribbon has 9.9 m. How many m do 10 of them make in all? =
  39. 39.1.8 × 0.5 =
  40. 40.1.1 × 0.9 =

Answer key

  1. 2.88
  2. 1/21
  3. 0.3
  4. 2.34
  5. 1
  6. 1/21
  7. 16
  8. 3/2
  9. 2
  10. 0.18
  11. 50.4
  12. 6
  13. 6/35
  14. 32/9
  15. 5
  16. 5/2
  17. 7.1
  18. 7
  19. 4
  20. 35/3
  21. 4.92
  22. 3
  23. 2/15
  24. 71.2
  25. 5.98
  26. 1.59
  27. 3.75
  28. 2.2
  29. 35/9
  30. 4/9
  31. 4/21
  32. 1.11
  33. 34.8
  34. 4.97
  35. 10/81
  36. 35/24
  37. 2.51
  38. 99
  39. 0.9
  40. 0.99

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