← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 437 · 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 × 36 =
  2. 2.35 × 12 =
  3. 3.55 × 10 =
  4. 4.55 × 32 =
  5. 5.38 × 75 =
  6. 6.35 × 40 =
  7. 7.32 × 35 =
  8. 8.40 × 15 =
  9. 9.38 × 65 =
  10. 10.25 × 22 =
  11. 11.40 × 75 =
  12. 12.45 × 8 =
  13. 13.20 × 65 =
  14. 14.65 × 34 =
  15. 15.25 × 34 =
  16. 16.35 × 34 =
  17. 17.16 × 125 =
  18. 18.16 × 55 =
  19. 19.25 × 30 =
  20. 20.65 × 40 =
  21. 21.34 × 45 =
  22. 22.15 × 18 =
  23. 23.125 × 14 =
  24. 24.55 × 38 =
  25. 25.38 × 15 =
  26. 26.22 × 45 =
  27. 27.6 × 35 =
  28. 28.40 × 75 =
  29. 29.55 × 16 =
  30. 30.65 × 6 =
  31. 31.6 × 75 =
  32. 32.22 × 75 =
  33. 33.65 × 26 =
  34. 34.16 × 15 =
  35. 35.38 × 75 =
  36. 36.25 × 32 =
  37. 37.28 × 75 =
  38. 38.25 × 34 =
  39. 39.32 × 45 =
  40. 40.18 × 75 =

Answer key

  1. 2340
  2. 420
  3. 550
  4. 1760
  5. 2850
  6. 1400
  7. 1120
  8. 600
  9. 2470
  10. 550
  11. 3000
  12. 360
  13. 1300
  14. 2210
  15. 850
  16. 1190
  17. 2000
  18. 880
  19. 750
  20. 2600
  21. 1530
  22. 270
  23. 1750
  24. 2090
  25. 570
  26. 990
  27. 210
  28. 3000
  29. 880
  30. 390
  31. 450
  32. 1650
  33. 1690
  34. 240
  35. 2850
  36. 800
  37. 2100
  38. 850
  39. 1440
  40. 1350

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