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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 417 · 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.One bag of potatoes weighs 2.8 kg. How many kg do 3 of them make in all? =
  2. 2.4.8 ÷ 0.6 =
  3. 3.1/5 × 1/8 =
  4. 4.One bottle of oil holds 5.8 L. How many L do 4 of them make in all? =
  5. 5.5/8 ÷ 1/7 =
  6. 6.3/4 × 8 =
  7. 7.1/9 × 7 =
  8. 8.2/7 × 3/4 =
  9. 9.7/8 × 3/8 =
  10. 10.One packet of rice weighs 3.1 kg. How many kg do 6 of them make in all? =
  11. 11.4/7 × 14 =
  12. 12.3 ÷ 0.6 =
  13. 13.1/5 × 1/9 =
  14. 14.4/7 × 15 =
  15. 15.7/8 × 2 =
  16. 16.3/4 ÷ 1/3 =
  17. 17.9.7 × 0.2 =
  18. 18.1/3 × 14 =
  19. 19.1/4 × 12 =
  20. 20.5/6 × 1/9 =
  21. 21.2.4 ÷ 0.2 =
  22. 22.5/8 × 2/3 =
  23. 23.One jug of milk holds 8.4 L. How many L do 6 of them make in all? =
  24. 24.3.5 ÷ 0.5 =
  25. 25.6.6 ÷ 0.6 =
  26. 26.1/3 × 3/7 =
  27. 27.One jug of milk holds 3.8 L. How many L do 5 of them make in all? =
  28. 28.16.88 ÷ 4 =
  29. 29.One roll of ribbon has 2.2 m. How many m do 4 of them make in all? =
  30. 30.1/6 × 12 =
  31. 31.7.3 × 0.8 =
  32. 32.7/9 × 10 =
  33. 33.1.6 ÷ 0.4 =
  34. 34.One bottle of oil holds 4.1 L. How many L do 5 of them make in all? =
  35. 35.1/7 × 3/8 =
  36. 36.14.9 ÷ 5 =
  37. 37.11.1 ÷ 2 =
  38. 38.3/8 × 5 =
  39. 39.3/7 × 10 =
  40. 40.4/7 × 12 =

Answer key

  1. 8.4
  2. 8
  3. 1/40
  4. 23.2
  5. 35/8
  6. 6
  7. 7/9
  8. 3/14
  9. 21/64
  10. 18.6
  11. 8
  12. 5
  13. 1/45
  14. 60/7
  15. 7/4
  16. 9/4
  17. 1.94
  18. 14/3
  19. 3
  20. 5/54
  21. 12
  22. 5/12
  23. 50.4
  24. 7
  25. 11
  26. 1/7
  27. 19
  28. 4.22
  29. 8.8
  30. 2
  31. 5.84
  32. 70/9
  33. 4
  34. 20.5
  35. 3/56
  36. 2.98
  37. 5.55
  38. 15/8
  39. 30/7
  40. 48/7

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