← 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 289 · 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. 1.8/9 ÷ 2/5 =
  2. 2.2.98 ÷ 2 =
  3. 3.4/5 ÷ 7/8 =
  4. 4.9.7 × 0.8 =
  5. 5.1.2 ÷ 0.6 =
  6. 6.2.1 ÷ 0.3 =
  7. 7.2.68 ÷ 4 =
  8. 8.2.7 × 0.5 =
  9. 9.5/7 × 2/5 =
  10. 10.0.3 × 0.8 =
  11. 11.1/3 × 3/5 =
  12. 12.One roll of ribbon has 3.4 m. How many m do 4 of them make in all? =
  13. 13.4/9 ÷ 3/5 =
  14. 14.4/9 × 4 =
  15. 15.2/9 ÷ 4/5 =
  16. 16.2.4 ÷ 4 =
  17. 17.3.3 ÷ 0.3 =
  18. 18.3/4 ÷ 2/5 =
  19. 19.4.9 × 0.2 =
  20. 20.One bottle of oil holds 2.8 L. How many L do 8 of them make in all? =
  21. 21.2/3 ÷ 1/9 =
  22. 22.26.12 ÷ 4 =
  23. 23.2/9 ÷ 4/7 =
  24. 24.4/9 × 5 =
  25. 25.4/5 ÷ 2/9 =
  26. 26.3/8 × 3/5 =
  27. 27.4/9 × 3/5 =
  28. 28.5/8 × 2/7 =
  29. 29.3/7 ÷ 7/8 =
  30. 30.One bottle of oil holds 6.5 L. How many L do 10 of them make in all? =
  31. 31.1/5 × 5/8 =
  32. 32.2/7 × 1/4 =
  33. 33.One bag of potatoes weighs 5.5 kg. How many kg do 3 of them make in all? =
  34. 34.1/3 × 4 =
  35. 35.One roll of ribbon has 5.4 m. How many m do 2 of them make in all? =
  36. 36.1/7 × 5/9 =
  37. 37.19.28 ÷ 8 =
  38. 38.0.6 ÷ 0.2 =
  39. 39.One roll of ribbon has 7.6 m. How many m do 4 of them make in all? =
  40. 40.5/7 × 2 =

Answer key

  1. 20/9
  2. 1.49
  3. 32/35
  4. 7.76
  5. 2
  6. 7
  7. 0.67
  8. 1.35
  9. 2/7
  10. 0.24
  11. 1/5
  12. 13.6
  13. 20/27
  14. 16/9
  15. 5/18
  16. 0.6
  17. 11
  18. 15/8
  19. 0.98
  20. 22.4
  21. 6
  22. 6.53
  23. 7/18
  24. 20/9
  25. 18/5
  26. 9/40
  27. 4/15
  28. 5/28
  29. 24/49
  30. 65
  31. 1/8
  32. 1/14
  33. 16.5
  34. 4/3
  35. 10.8
  36. 5/63
  37. 2.41
  38. 3
  39. 30.4
  40. 10/7

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