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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 158 · 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. 1.40 ÷ 5 =
  2. 2.1/7 × 1/9 =
  3. 3.5/8 × 1/9 =
  4. 4.0.9 ÷ 0.3 =
  5. 5.6.6 ÷ 0.6 =
  6. 6.1/5 × 1/8 =
  7. 7.30.04 ÷ 4 =
  8. 8.1/3 × 11 =
  9. 9.5/8 × 1/4 =
  10. 10.1.5 ÷ 0.5 =
  11. 11.9.9 ÷ 0.9 =
  12. 12.3.6 ÷ 0.9 =
  13. 13.5/8 × 12 =
  14. 14.4/7 ÷ 3/5 =
  15. 15.3/7 ÷ 5/8 =
  16. 16.4/5 × 9 =
  17. 17.0.5 × 0.4 =
  18. 18.One roll of ribbon has 1.9 m. How many m do 10 of them make in all? =
  19. 19.3/5 × 5/6 =
  20. 20.1/6 × 4/9 =
  21. 21.8/9 × 7/8 =
  22. 22.27.12 ÷ 8 =
  23. 23.One roll of ribbon has 7.9 m. How many m do 12 of them make in all? =
  24. 24.1.3 × 0.4 =
  25. 25.2.1 × 0.3 =
  26. 26.5.4 × 0.4 =
  27. 27.One packet of rice weighs 3.8 kg. How many kg do 3 of them make in all? =
  28. 28.5/8 × 5/9 =
  29. 29.2/7 × 14 =
  30. 30.One bag of potatoes weighs 6.7 kg. How many kg do 2 of them make in all? =
  31. 31.One bottle of oil holds 8 L. How many L do 8 of them make in all? =
  32. 32.6.1 × 0.6 =
  33. 33.5/6 × 5 =
  34. 34.2.8 ÷ 0.4 =
  35. 35.8.94 ÷ 2 =
  36. 36.One bottle of oil holds 2.7 L. How many L do 8 of them make in all? =
  37. 37.5.05 ÷ 5 =
  38. 38.3/4 × 2 =
  39. 39.2/3 × 9 =
  40. 40.5.4 × 0.6 =

Answer key

  1. 8
  2. 1/63
  3. 5/72
  4. 3
  5. 11
  6. 1/40
  7. 7.51
  8. 11/3
  9. 5/32
  10. 3
  11. 11
  12. 4
  13. 15/2
  14. 20/21
  15. 24/35
  16. 36/5
  17. 0.2
  18. 19
  19. 1/2
  20. 2/27
  21. 7/9
  22. 3.39
  23. 94.8
  24. 0.52
  25. 0.63
  26. 2.16
  27. 11.4
  28. 25/72
  29. 4
  30. 13.4
  31. 64
  32. 3.66
  33. 25/6
  34. 7
  35. 4.47
  36. 21.6
  37. 1.01
  38. 3/2
  39. 6
  40. 3.24

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