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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 413 · 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. 1.16 × 15 =
  2. 2.125 × 20 =
  3. 3.65 × 32 =
  4. 4.75 × 6 =
  5. 5.125 × 10 =
  6. 6.14 × 75 =
  7. 7.125 × 28 =
  8. 8.40 × 15 =
  9. 9.8 × 55 =
  10. 10.28 × 25 =
  11. 11.75 × 24 =
  12. 12.14 × 25 =
  13. 13.40 × 25 =
  14. 14.6 × 15 =
  15. 15.15 × 32 =
  16. 16.38 × 125 =
  17. 17.25 × 40 =
  18. 18.8 × 75 =
  19. 19.15 × 34 =
  20. 20.35 × 10 =
  21. 21.38 × 35 =
  22. 22.25 × 12 =
  23. 23.15 × 8 =
  24. 24.24 × 35 =
  25. 25.30 × 45 =
  26. 26.45 × 34 =
  27. 27.38 × 75 =
  28. 28.24 × 15 =
  29. 29.35 × 30 =
  30. 30.20 × 15 =
  31. 31.45 × 10 =
  32. 32.8 × 65 =
  33. 33.15 × 24 =
  34. 34.8 × 75 =
  35. 35.16 × 25 =
  36. 36.16 × 35 =
  37. 37.25 × 32 =
  38. 38.14 × 15 =
  39. 39.10 × 45 =
  40. 40.125 × 10 =

Answer key

  1. 240
  2. 2500
  3. 2080
  4. 450
  5. 1250
  6. 1050
  7. 3500
  8. 600
  9. 440
  10. 700
  11. 1800
  12. 350
  13. 1000
  14. 90
  15. 480
  16. 4750
  17. 1000
  18. 600
  19. 510
  20. 350
  21. 1330
  22. 300
  23. 120
  24. 840
  25. 1350
  26. 1530
  27. 2850
  28. 360
  29. 1050
  30. 300
  31. 450
  32. 520
  33. 360
  34. 600
  35. 400
  36. 560
  37. 800
  38. 210
  39. 450
  40. 1250

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