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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 563 · 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. 1.75 × 34 =
  2. 2.24 × 75 =
  3. 3.35 × 20 =
  4. 4.125 × 16 =
  5. 5.25 × 38 =
  6. 6.55 × 40 =
  7. 7.8 × 45 =
  8. 8.24 × 125 =
  9. 9.75 × 20 =
  10. 10.24 × 15 =
  11. 11.125 × 34 =
  12. 12.15 × 22 =
  13. 13.55 × 30 =
  14. 14.125 × 40 =
  15. 15.75 × 6 =
  16. 16.15 × 32 =
  17. 17.34 × 25 =
  18. 18.26 × 125 =
  19. 19.36 × 55 =
  20. 20.75 × 40 =
  21. 21.36 × 65 =
  22. 22.34 × 25 =
  23. 23.55 × 16 =
  24. 24.10 × 45 =
  25. 25.26 × 55 =
  26. 26.25 × 36 =
  27. 27.38 × 35 =
  28. 28.35 × 28 =
  29. 29.55 × 12 =
  30. 30.75 × 16 =
  31. 31.35 × 8 =
  32. 32.28 × 125 =
  33. 33.32 × 75 =
  34. 34.55 × 38 =
  35. 35.75 × 28 =
  36. 36.26 × 25 =
  37. 37.15 × 12 =
  38. 38.45 × 8 =
  39. 39.36 × 125 =
  40. 40.24 × 25 =

Answer key

  1. 2550
  2. 1800
  3. 700
  4. 2000
  5. 950
  6. 2200
  7. 360
  8. 3000
  9. 1500
  10. 360
  11. 4250
  12. 330
  13. 1650
  14. 5000
  15. 450
  16. 480
  17. 850
  18. 3250
  19. 1980
  20. 3000
  21. 2340
  22. 850
  23. 880
  24. 450
  25. 1430
  26. 900
  27. 1330
  28. 980
  29. 660
  30. 1200
  31. 280
  32. 3500
  33. 2400
  34. 2090
  35. 2100
  36. 650
  37. 180
  38. 360
  39. 4500
  40. 600

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