← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 862 · 40 questions
TalentJR

How it works (Double and halve): Find the number ending in 5 and the even number. Double the one ending in 5; halve the even one. Repeat while it helps (25 → 50 → 100), then multiply.

NameDateTime takenScore ___ / 40
  1. 1.65 × 24 =
  2. 2.26 × 35 =
  3. 3.75 × 8 =
  4. 4.18 × 75 =
  5. 5.35 × 14 =
  6. 6.30 × 35 =
  7. 7.32 × 15 =
  8. 8.12 × 45 =
  9. 9.12 × 65 =
  10. 10.28 × 75 =
  11. 11.25 × 26 =
  12. 12.125 × 36 =
  13. 13.8 × 65 =
  14. 14.25 × 6 =
  15. 15.75 × 36 =
  16. 16.35 × 34 =
  17. 17.75 × 40 =
  18. 18.36 × 35 =
  19. 19.14 × 25 =
  20. 20.65 × 14 =
  21. 21.15 × 10 =
  22. 22.34 × 55 =
  23. 23.15 × 10 =
  24. 24.65 × 34 =
  25. 25.35 × 12 =
  26. 26.15 × 36 =
  27. 27.25 × 22 =
  28. 28.35 × 10 =
  29. 29.25 × 24 =
  30. 30.75 × 40 =
  31. 31.10 × 55 =
  32. 32.38 × 75 =
  33. 33.14 × 125 =
  34. 34.45 × 30 =
  35. 35.75 × 26 =
  36. 36.32 × 125 =
  37. 37.18 × 15 =
  38. 38.6 × 45 =
  39. 39.40 × 65 =
  40. 40.26 × 125 =

Answer key

  1. 1560
  2. 910
  3. 600
  4. 1350
  5. 490
  6. 1050
  7. 480
  8. 540
  9. 780
  10. 2100
  11. 650
  12. 4500
  13. 520
  14. 150
  15. 2700
  16. 1190
  17. 3000
  18. 1260
  19. 350
  20. 910
  21. 150
  22. 1870
  23. 150
  24. 2210
  25. 420
  26. 540
  27. 550
  28. 350
  29. 600
  30. 3000
  31. 550
  32. 2850
  33. 1750
  34. 1350
  35. 1950
  36. 4000
  37. 270
  38. 270
  39. 2600
  40. 3250

Free tables & multiplication lessons, practice and worksheets at talentjr.in/multiplication-tables