← Fractions and decimals: multiply and divide lesson New set →

Class 7 Maths Worksheet: Fractions and Decimals

Maths worksheets lesson 50: Fractions and decimals: multiply and divide · Set 42 · 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. 1.4/9 × 2 =
  2. 2.One packet of rice weighs 4.3 kg. How many kg do 10 of them make in all? =
  3. 3.2/5 × 2 =
  4. 4.One packet of rice weighs 6.4 kg. How many kg do 5 of them make in all? =
  5. 5.1/3 × 11 =
  6. 6.3/7 ÷ 4/5 =
  7. 7.4 ÷ 0.4 =
  8. 8.1.2 ÷ 0.4 =
  9. 9.2/5 × 1/9 =
  10. 10.6/7 × 3/5 =
  11. 11.4 ÷ 0.5 =
  12. 12.7/8 ÷ 2/5 =
  13. 13.13.48 ÷ 4 =
  14. 14.1/7 × 12 =
  15. 15.9.2 × 0.3 =
  16. 16.4/5 × 5 =
  17. 17.43.8 ÷ 5 =
  18. 18.2.4 ÷ 0.4 =
  19. 19.2/7 × 14 =
  20. 20.3/8 ÷ 1/4 =
  21. 21.1/4 × 10 =
  22. 22.4/7 ÷ 1/8 =
  23. 23.2.8 ÷ 0.7 =
  24. 24.1/4 ÷ 1/3 =
  25. 25.One roll of ribbon has 4.8 m. How many m do 6 of them make in all? =
  26. 26.1/6 ÷ 2/3 =
  27. 27.3.1 × 0.7 =
  28. 28.One packet of rice weighs 2.4 kg. How many kg do 5 of them make in all? =
  29. 29.One bottle of oil holds 8.5 L. How many L do 3 of them make in all? =
  30. 30.3.6 ÷ 0.6 =
  31. 31.3/4 × 11 =
  32. 32.7.7 × 0.7 =
  33. 33.45.95 ÷ 5 =
  34. 34.5/6 ÷ 8/9 =
  35. 35.9.4 ÷ 5 =
  36. 36.1/7 × 2/3 =
  37. 37.1/7 × 2/5 =
  38. 38.One roll of ribbon has 1.8 m. How many m do 3 of them make in all? =
  39. 39.One packet of rice weighs 4.1 kg. How many kg do 10 of them make in all? =
  40. 40.6.7 × 0.4 =

Answer key

  1. 8/9
  2. 43
  3. 4/5
  4. 32
  5. 11/3
  6. 15/28
  7. 10
  8. 3
  9. 2/45
  10. 18/35
  11. 8
  12. 35/16
  13. 3.37
  14. 12/7
  15. 2.76
  16. 4
  17. 8.76
  18. 6
  19. 4
  20. 3/2
  21. 5/2
  22. 32/7
  23. 4
  24. 3/4
  25. 28.8
  26. 1/4
  27. 2.17
  28. 12
  29. 25.5
  30. 6
  31. 33/4
  32. 5.39
  33. 9.19
  34. 15/16
  35. 1.88
  36. 2/21
  37. 2/35
  38. 5.4
  39. 41
  40. 2.68

Free maths worksheets lessons, practice and worksheets at talentjr.in/maths-worksheets