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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 131 · 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. 1.38.9 ÷ 5 =
  2. 2.8.65 ÷ 5 =
  3. 3.4.8 ÷ 0.4 =
  4. 4.2.8 ÷ 0.4 =
  5. 5.2.4 ÷ 0.8 =
  6. 6.1/4 × 2/7 =
  7. 7.2 ÷ 0.5 =
  8. 8.One roll of ribbon has 7 m. How many m do 2 of them make in all? =
  9. 9.5.7 ÷ 2 =
  10. 10.One bag of potatoes weighs 3.3 kg. How many kg do 6 of them make in all? =
  11. 11.33.36 ÷ 4 =
  12. 12.2/7 ÷ 1/7 =
  13. 13.1.6 ÷ 0.4 =
  14. 14.8/9 × 4/5 =
  15. 15.31.04 ÷ 4 =
  16. 16.15.8 ÷ 4 =
  17. 17.8/9 × 7/8 =
  18. 18.5/8 × 6/7 =
  19. 19.3/5 × 1/5 =
  20. 20.1/4 × 3/5 =
  21. 21.5.9 × 0.5 =
  22. 22.0.9 ÷ 0.3 =
  23. 23.4.5 ÷ 0.9 =
  24. 24.2.2 × 0.7 =
  25. 25.1/8 × 1/4 =
  26. 26.30.6 ÷ 4 =
  27. 27.12.52 ÷ 4 =
  28. 28.7/8 × 4/9 =
  29. 29.6/7 × 3/7 =
  30. 30.7/9 ÷ 4/5 =
  31. 31.5/6 × 5/6 =
  32. 32.1/8 ÷ 2/3 =
  33. 33.5/8 × 2/5 =
  34. 34.1/7 × 3/5 =
  35. 35.3.7 ÷ 2 =
  36. 36.4/9 ÷ 1/8 =
  37. 37.1/8 ÷ 7/8 =
  38. 38.1/9 ÷ 4/7 =
  39. 39.1/5 × 10 =
  40. 40.One bottle of oil holds 6.3 L. How many L do 2 of them make in all? =

Answer key

  1. 7.78
  2. 1.73
  3. 12
  4. 7
  5. 3
  6. 1/14
  7. 4
  8. 14
  9. 2.85
  10. 19.8
  11. 8.34
  12. 2
  13. 4
  14. 32/45
  15. 7.76
  16. 3.95
  17. 7/9
  18. 15/28
  19. 3/25
  20. 3/20
  21. 2.95
  22. 3
  23. 5
  24. 1.54
  25. 1/32
  26. 7.65
  27. 3.13
  28. 7/18
  29. 18/49
  30. 35/36
  31. 25/36
  32. 3/16
  33. 1/4
  34. 3/35
  35. 1.85
  36. 32/9
  37. 1/7
  38. 7/36
  39. 2
  40. 12.6

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