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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 592 · 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. 1.20 × 25 =
  2. 2.65 × 24 =
  3. 3.45 × 20 =
  4. 4.18 × 125 =
  5. 5.28 × 25 =
  6. 6.25 × 8 =
  7. 7.30 × 25 =
  8. 8.14 × 55 =
  9. 9.65 × 40 =
  10. 10.6 × 55 =
  11. 11.14 × 25 =
  12. 12.38 × 65 =
  13. 13.22 × 25 =
  14. 14.125 × 14 =
  15. 15.36 × 35 =
  16. 16.12 × 65 =
  17. 17.65 × 10 =
  18. 18.75 × 10 =
  19. 19.15 × 10 =
  20. 20.25 × 18 =
  21. 21.38 × 25 =
  22. 22.125 × 28 =
  23. 23.35 × 14 =
  24. 24.36 × 75 =
  25. 25.45 × 10 =
  26. 26.36 × 25 =
  27. 27.12 × 55 =
  28. 28.25 × 38 =
  29. 29.125 × 32 =
  30. 30.20 × 45 =
  31. 31.14 × 75 =
  32. 32.26 × 15 =
  33. 33.35 × 16 =
  34. 34.15 × 16 =
  35. 35.25 × 22 =
  36. 36.12 × 45 =
  37. 37.32 × 75 =
  38. 38.32 × 75 =
  39. 39.10 × 15 =
  40. 40.8 × 75 =

Answer key

  1. 500
  2. 1560
  3. 900
  4. 2250
  5. 700
  6. 200
  7. 750
  8. 770
  9. 2600
  10. 330
  11. 350
  12. 2470
  13. 550
  14. 1750
  15. 1260
  16. 780
  17. 650
  18. 750
  19. 150
  20. 450
  21. 950
  22. 3500
  23. 490
  24. 2700
  25. 450
  26. 900
  27. 660
  28. 950
  29. 4000
  30. 900
  31. 1050
  32. 390
  33. 560
  34. 240
  35. 550
  36. 540
  37. 2400
  38. 2400
  39. 150
  40. 600

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