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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 279 · 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. 1.1/8 × 13 =
  2. 2.30.16 ÷ 8 =
  3. 3.1.88 ÷ 4 =
  4. 4.1/9 ÷ 2/5 =
  5. 5.6/7 ÷ 5/9 =
  6. 6.45.3 ÷ 5 =
  7. 7.3/8 × 12 =
  8. 8.2.2 ÷ 0.2 =
  9. 9.5/9 × 15 =
  10. 10.2.4 × 0.4 =
  11. 11.7.4 × 0.6 =
  12. 12.2/3 × 12 =
  13. 13.One packet of rice weighs 2.1 kg. How many kg do 6 of them make in all? =
  14. 14.1/6 ÷ 7/9 =
  15. 15.52.32 ÷ 8 =
  16. 16.One bottle of oil holds 2.1 L. How many L do 11 of them make in all? =
  17. 17.33.7 ÷ 5 =
  18. 18.One roll of ribbon has 4.7 m. How many m do 7 of them make in all? =
  19. 19.One bag of potatoes weighs 4.9 kg. How many kg do 2 of them make in all? =
  20. 20.3/8 × 5 =
  21. 21.2/3 ÷ 6/7 =
  22. 22.5.7 × 0.3 =
  23. 23.1/4 × 2/7 =
  24. 24.22.5 ÷ 5 =
  25. 25.1/4 ÷ 5/6 =
  26. 26.5/8 × 4 =
  27. 27.1/4 × 6 =
  28. 28.One bottle of oil holds 8.7 L. How many L do 4 of them make in all? =
  29. 29.1/3 × 7/9 =
  30. 30.6.6 ÷ 0.6 =
  31. 31.10.62 ÷ 2 =
  32. 32.8/9 × 5 =
  33. 33.1.5 × 0.9 =
  34. 34.7/9 ÷ 2/5 =
  35. 35.8.8 ÷ 0.8 =
  36. 36.3/7 × 13 =
  37. 37.One packet of rice weighs 1.3 kg. How many kg do 5 of them make in all? =
  38. 38.3/5 ÷ 5/7 =
  39. 39.8.8 × 0.3 =
  40. 40.3/8 × 4 =

Answer key

  1. 13/8
  2. 3.77
  3. 0.47
  4. 5/18
  5. 54/35
  6. 9.06
  7. 9/2
  8. 11
  9. 25/3
  10. 0.96
  11. 4.44
  12. 8
  13. 12.6
  14. 3/14
  15. 6.54
  16. 23.1
  17. 6.74
  18. 32.9
  19. 9.8
  20. 15/8
  21. 7/9
  22. 1.71
  23. 1/14
  24. 4.5
  25. 3/10
  26. 5/2
  27. 3/2
  28. 34.8
  29. 7/27
  30. 11
  31. 5.31
  32. 40/9
  33. 1.35
  34. 35/18
  35. 11
  36. 39/7
  37. 6.5
  38. 21/25
  39. 2.64
  40. 3/2

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