← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 141 · 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. 1.25 × 32 =
  2. 2.16 × 75 =
  3. 3.25 × 22 =
  4. 4.34 × 15 =
  5. 5.75 × 24 =
  6. 6.15 × 24 =
  7. 7.45 × 36 =
  8. 8.65 × 36 =
  9. 9.65 × 30 =
  10. 10.6 × 25 =
  11. 11.125 × 12 =
  12. 12.75 × 18 =
  13. 13.24 × 55 =
  14. 14.34 × 15 =
  15. 15.18 × 15 =
  16. 16.125 × 24 =
  17. 17.30 × 35 =
  18. 18.6 × 55 =
  19. 19.16 × 55 =
  20. 20.38 × 55 =
  21. 21.18 × 55 =
  22. 22.35 × 14 =
  23. 23.25 × 16 =
  24. 24.125 × 20 =
  25. 25.65 × 40 =
  26. 26.32 × 15 =
  27. 27.75 × 14 =
  28. 28.28 × 25 =
  29. 29.65 × 24 =
  30. 30.55 × 38 =
  31. 31.34 × 35 =
  32. 32.20 × 15 =
  33. 33.65 × 10 =
  34. 34.16 × 55 =
  35. 35.35 × 6 =
  36. 36.35 × 36 =
  37. 37.75 × 12 =
  38. 38.20 × 35 =
  39. 39.28 × 15 =
  40. 40.75 × 6 =

Answer key

  1. 800
  2. 1200
  3. 550
  4. 510
  5. 1800
  6. 360
  7. 1620
  8. 2340
  9. 1950
  10. 150
  11. 1500
  12. 1350
  13. 1320
  14. 510
  15. 270
  16. 3000
  17. 1050
  18. 330
  19. 880
  20. 2090
  21. 990
  22. 490
  23. 400
  24. 2500
  25. 2600
  26. 480
  27. 1050
  28. 700
  29. 1560
  30. 2090
  31. 1190
  32. 300
  33. 650
  34. 880
  35. 210
  36. 1260
  37. 900
  38. 700
  39. 420
  40. 450

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