← Doubling and halving lesson New set →

Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 40 · 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 × 40 =
  2. 2.125 × 12 =
  3. 3.125 × 40 =
  4. 4.45 × 8 =
  5. 5.14 × 35 =
  6. 6.16 × 125 =
  7. 7.35 × 12 =
  8. 8.24 × 15 =
  9. 9.6 × 25 =
  10. 10.45 × 20 =
  11. 11.15 × 22 =
  12. 12.65 × 8 =
  13. 13.65 × 26 =
  14. 14.32 × 15 =
  15. 15.26 × 55 =
  16. 16.45 × 22 =
  17. 17.25 × 36 =
  18. 18.38 × 55 =
  19. 19.36 × 25 =
  20. 20.32 × 65 =
  21. 21.125 × 40 =
  22. 22.25 × 34 =
  23. 23.6 × 15 =
  24. 24.75 × 16 =
  25. 25.38 × 65 =
  26. 26.25 × 34 =
  27. 27.10 × 25 =
  28. 28.16 × 35 =
  29. 29.6 × 35 =
  30. 30.25 × 12 =
  31. 31.8 × 75 =
  32. 32.26 × 65 =
  33. 33.35 × 24 =
  34. 34.45 × 22 =
  35. 35.12 × 15 =
  36. 36.28 × 15 =
  37. 37.75 × 38 =
  38. 38.40 × 45 =
  39. 39.40 × 65 =
  40. 40.28 × 45 =

Answer key

  1. 1000
  2. 1500
  3. 5000
  4. 360
  5. 490
  6. 2000
  7. 420
  8. 360
  9. 150
  10. 900
  11. 330
  12. 520
  13. 1690
  14. 480
  15. 1430
  16. 990
  17. 900
  18. 2090
  19. 900
  20. 2080
  21. 5000
  22. 850
  23. 90
  24. 1200
  25. 2470
  26. 850
  27. 250
  28. 560
  29. 210
  30. 300
  31. 600
  32. 1690
  33. 840
  34. 990
  35. 180
  36. 420
  37. 2850
  38. 1800
  39. 2600
  40. 1260

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