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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 67 · 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. 1.40 × 75 =
  2. 2.75 × 6 =
  3. 3.32 × 35 =
  4. 4.55 × 28 =
  5. 5.35 × 6 =
  6. 6.18 × 125 =
  7. 7.16 × 25 =
  8. 8.22 × 45 =
  9. 9.55 × 10 =
  10. 10.35 × 30 =
  11. 11.6 × 15 =
  12. 12.15 × 30 =
  13. 13.125 × 12 =
  14. 14.45 × 22 =
  15. 15.65 × 40 =
  16. 16.75 × 18 =
  17. 17.24 × 55 =
  18. 18.25 × 30 =
  19. 19.15 × 38 =
  20. 20.25 × 36 =
  21. 21.125 × 28 =
  22. 22.75 × 30 =
  23. 23.35 × 12 =
  24. 24.125 × 8 =
  25. 25.16 × 15 =
  26. 26.125 × 40 =
  27. 27.10 × 125 =
  28. 28.25 × 16 =
  29. 29.25 × 38 =
  30. 30.12 × 65 =
  31. 31.35 × 16 =
  32. 32.35 × 38 =
  33. 33.12 × 25 =
  34. 34.35 × 14 =
  35. 35.10 × 75 =
  36. 36.35 × 12 =
  37. 37.45 × 12 =
  38. 38.75 × 20 =
  39. 39.45 × 28 =
  40. 40.10 × 25 =

Answer key

  1. 3000
  2. 450
  3. 1120
  4. 1540
  5. 210
  6. 2250
  7. 400
  8. 990
  9. 550
  10. 1050
  11. 90
  12. 450
  13. 1500
  14. 990
  15. 2600
  16. 1350
  17. 1320
  18. 750
  19. 570
  20. 900
  21. 3500
  22. 2250
  23. 420
  24. 1000
  25. 240
  26. 5000
  27. 1250
  28. 400
  29. 950
  30. 780
  31. 560
  32. 1330
  33. 300
  34. 490
  35. 750
  36. 420
  37. 540
  38. 1500
  39. 1260
  40. 250

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