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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 177 · 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. 1.5/7 ÷ 1/8 =
  2. 2.8.8 ÷ 0.8 =
  3. 3.One bottle of oil holds 7.1 L. How many L do 5 of them make in all? =
  4. 4.One bag of potatoes weighs 3.6 kg. How many kg do 4 of them make in all? =
  5. 5.7.9 × 0.2 =
  6. 6.1.5 × 0.5 =
  7. 7.7.3 × 0.9 =
  8. 8.1/3 × 4/9 =
  9. 9.3/5 ÷ 5/9 =
  10. 10.0.8 × 0.3 =
  11. 11.3/4 ÷ 3/4 =
  12. 12.1/9 × 4/5 =
  13. 13.0.8 × 0.8 =
  14. 14.6.3 ÷ 0.9 =
  15. 15.2/7 × 8/9 =
  16. 16.7/8 ÷ 5/9 =
  17. 17.6.6 × 0.3 =
  18. 18.5.5 × 0.8 =
  19. 19.14.48 ÷ 2 =
  20. 20.One packet of rice weighs 1.9 kg. How many kg do 2 of them make in all? =
  21. 21.1.8 ÷ 0.3 =
  22. 22.14.14 ÷ 2 =
  23. 23.One roll of ribbon has 8.6 m. How many m do 6 of them make in all? =
  24. 24.One bottle of oil holds 2.3 L. How many L do 12 of them make in all? =
  25. 25.2.4 × 0.8 =
  26. 26.1/3 × 3/8 =
  27. 27.3.6 ÷ 0.6 =
  28. 28.4.4 ÷ 0.4 =
  29. 29.20.84 ÷ 4 =
  30. 30.0.4 ÷ 0.2 =
  31. 31.7.7 ÷ 0.7 =
  32. 32.3/8 × 7 =
  33. 33.4/7 × 1/5 =
  34. 34.1/4 ÷ 1/8 =
  35. 35.One bottle of oil holds 2.5 L. How many L do 10 of them make in all? =
  36. 36.One roll of ribbon has 4.5 m. How many m do 5 of them make in all? =
  37. 37.2.4 ÷ 0.2 =
  38. 38.3/8 × 3 =
  39. 39.1/8 ÷ 8/9 =
  40. 40.2/9 ÷ 3/5 =

Answer key

  1. 40/7
  2. 11
  3. 35.5
  4. 14.4
  5. 1.58
  6. 0.75
  7. 6.57
  8. 4/27
  9. 27/25
  10. 0.24
  11. 1
  12. 4/45
  13. 0.64
  14. 7
  15. 16/63
  16. 63/40
  17. 1.98
  18. 4.4
  19. 7.24
  20. 3.8
  21. 6
  22. 7.07
  23. 51.6
  24. 27.6
  25. 1.92
  26. 1/8
  27. 6
  28. 11
  29. 5.21
  30. 2
  31. 11
  32. 21/8
  33. 4/35
  34. 2
  35. 25
  36. 22.5
  37. 12
  38. 9/8
  39. 9/64
  40. 10/27

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