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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 218 · 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. 1.125 × 40 =
  2. 2.55 × 8 =
  3. 3.65 × 14 =
  4. 4.38 × 45 =
  5. 5.10 × 45 =
  6. 6.28 × 75 =
  7. 7.24 × 15 =
  8. 8.28 × 55 =
  9. 9.45 × 12 =
  10. 10.25 × 40 =
  11. 11.35 × 32 =
  12. 12.55 × 10 =
  13. 13.55 × 32 =
  14. 14.25 × 10 =
  15. 15.35 × 10 =
  16. 16.8 × 25 =
  17. 17.75 × 26 =
  18. 18.18 × 45 =
  19. 19.20 × 75 =
  20. 20.18 × 15 =
  21. 21.14 × 65 =
  22. 22.15 × 26 =
  23. 23.10 × 55 =
  24. 24.45 × 36 =
  25. 25.55 × 36 =
  26. 26.15 × 28 =
  27. 27.55 × 8 =
  28. 28.25 × 36 =
  29. 29.40 × 55 =
  30. 30.15 × 8 =
  31. 31.34 × 75 =
  32. 32.35 × 26 =
  33. 33.125 × 28 =
  34. 34.32 × 75 =
  35. 35.65 × 40 =
  36. 36.25 × 26 =
  37. 37.22 × 25 =
  38. 38.125 × 30 =
  39. 39.35 × 8 =
  40. 40.35 × 6 =

Answer key

  1. 5000
  2. 440
  3. 910
  4. 1710
  5. 450
  6. 2100
  7. 360
  8. 1540
  9. 540
  10. 1000
  11. 1120
  12. 550
  13. 1760
  14. 250
  15. 350
  16. 200
  17. 1950
  18. 810
  19. 1500
  20. 270
  21. 910
  22. 390
  23. 550
  24. 1620
  25. 1980
  26. 420
  27. 440
  28. 900
  29. 2200
  30. 120
  31. 2550
  32. 910
  33. 3500
  34. 2400
  35. 2600
  36. 650
  37. 550
  38. 3750
  39. 280
  40. 210

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