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Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 10 · 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 × 9 =
  2. 2.17.36 ÷ 4 =
  3. 3.3/4 × 7/9 =
  4. 4.3/7 ÷ 2/3 =
  5. 5.5/9 ÷ 7/8 =
  6. 6.10.8 ÷ 0.9 =
  7. 7.One bag of potatoes weighs 8.4 kg. How many kg do 4 of them make in all? =
  8. 8.3.1 × 0.8 =
  9. 9.7/9 × 6/7 =
  10. 10.6.6 ÷ 0.6 =
  11. 11.5.8 × 0.4 =
  12. 12.1 ÷ 0.2 =
  13. 13.2/7 × 7 =
  14. 14.3/5 × 15 =
  15. 15.One bag of potatoes weighs 6.2 kg. How many kg do 6 of them make in all? =
  16. 16.3/4 ÷ 8/9 =
  17. 17.6.4 ÷ 0.8 =
  18. 18.24 ÷ 4 =
  19. 19.3/4 × 1/6 =
  20. 20.5/7 ÷ 2/9 =
  21. 21.1/7 × 9 =
  22. 22.1/3 × 2/5 =
  23. 23.9.6 ÷ 0.8 =
  24. 24.6.5 × 0.2 =
  25. 25.One bottle of oil holds 2.5 L. How many L do 6 of them make in all? =
  26. 26.1/5 × 2/7 =
  27. 27.1/7 ÷ 3/4 =
  28. 28.One jug of milk holds 2.9 L. How many L do 7 of them make in all? =
  29. 29.3/4 ÷ 7/8 =
  30. 30.76.48 ÷ 8 =
  31. 31.One roll of ribbon has 2.9 m. How many m do 3 of them make in all? =
  32. 32.16.08 ÷ 4 =
  33. 33.3.1 × 0.9 =
  34. 34.4.1 × 0.2 =
  35. 35.1/2 ÷ 4/5 =
  36. 36.1.6 ÷ 0.8 =
  37. 37.3/4 × 5 =
  38. 38.3/8 ÷ 1/9 =
  39. 39.3/8 ÷ 1/3 =
  40. 40.One bottle of oil holds 4.2 L. How many L do 10 of them make in all? =

Answer key

  1. 9/8
  2. 4.34
  3. 7/12
  4. 9/14
  5. 40/63
  6. 12
  7. 33.6
  8. 2.48
  9. 2/3
  10. 11
  11. 2.32
  12. 5
  13. 2
  14. 9
  15. 37.2
  16. 27/32
  17. 8
  18. 6
  19. 1/8
  20. 45/14
  21. 9/7
  22. 2/15
  23. 12
  24. 1.3
  25. 15
  26. 2/35
  27. 4/21
  28. 20.3
  29. 6/7
  30. 9.56
  31. 8.7
  32. 4.02
  33. 2.79
  34. 0.82
  35. 5/8
  36. 2
  37. 15/4
  38. 27/8
  39. 9/8
  40. 42

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