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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 808 · 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. 1.55 × 10 =
  2. 2.30 × 55 =
  3. 3.35 × 24 =
  4. 4.14 × 45 =
  5. 5.15 × 30 =
  6. 6.25 × 22 =
  7. 7.6 × 75 =
  8. 8.55 × 32 =
  9. 9.15 × 40 =
  10. 10.6 × 55 =
  11. 11.15 × 24 =
  12. 12.14 × 35 =
  13. 13.22 × 125 =
  14. 14.35 × 18 =
  15. 15.125 × 16 =
  16. 16.14 × 125 =
  17. 17.36 × 35 =
  18. 18.24 × 75 =
  19. 19.35 × 34 =
  20. 20.65 × 12 =
  21. 21.15 × 30 =
  22. 22.8 × 55 =
  23. 23.45 × 40 =
  24. 24.6 × 35 =
  25. 25.20 × 15 =
  26. 26.25 × 18 =
  27. 27.14 × 15 =
  28. 28.65 × 40 =
  29. 29.18 × 25 =
  30. 30.55 × 14 =
  31. 31.35 × 20 =
  32. 32.22 × 45 =
  33. 33.125 × 20 =
  34. 34.75 × 26 =
  35. 35.8 × 45 =
  36. 36.16 × 55 =
  37. 37.18 × 25 =
  38. 38.125 × 26 =
  39. 39.125 × 16 =
  40. 40.25 × 20 =

Answer key

  1. 550
  2. 1650
  3. 840
  4. 630
  5. 450
  6. 550
  7. 450
  8. 1760
  9. 600
  10. 330
  11. 360
  12. 490
  13. 2750
  14. 630
  15. 2000
  16. 1750
  17. 1260
  18. 1800
  19. 1190
  20. 780
  21. 450
  22. 440
  23. 1800
  24. 210
  25. 300
  26. 450
  27. 210
  28. 2600
  29. 450
  30. 770
  31. 700
  32. 990
  33. 2500
  34. 1950
  35. 360
  36. 880
  37. 450
  38. 3250
  39. 2000
  40. 500

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