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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 261 · 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. 1.10 × 15 =
  2. 2.75 × 16 =
  3. 3.125 × 20 =
  4. 4.65 × 6 =
  5. 5.55 × 24 =
  6. 6.16 × 35 =
  7. 7.25 × 6 =
  8. 8.32 × 65 =
  9. 9.26 × 35 =
  10. 10.25 × 12 =
  11. 11.34 × 55 =
  12. 12.75 × 6 =
  13. 13.20 × 75 =
  14. 14.15 × 12 =
  15. 15.24 × 75 =
  16. 16.40 × 75 =
  17. 17.35 × 20 =
  18. 18.65 × 34 =
  19. 19.75 × 18 =
  20. 20.38 × 75 =
  21. 21.36 × 35 =
  22. 22.65 × 20 =
  23. 23.32 × 25 =
  24. 24.40 × 15 =
  25. 25.55 × 12 =
  26. 26.25 × 8 =
  27. 27.25 × 18 =
  28. 28.38 × 55 =
  29. 29.15 × 26 =
  30. 30.10 × 55 =
  31. 31.40 × 45 =
  32. 32.65 × 10 =
  33. 33.75 × 22 =
  34. 34.28 × 25 =
  35. 35.18 × 75 =
  36. 36.18 × 35 =
  37. 37.25 × 16 =
  38. 38.65 × 22 =
  39. 39.12 × 15 =
  40. 40.26 × 35 =

Answer key

  1. 150
  2. 1200
  3. 2500
  4. 390
  5. 1320
  6. 560
  7. 150
  8. 2080
  9. 910
  10. 300
  11. 1870
  12. 450
  13. 1500
  14. 180
  15. 1800
  16. 3000
  17. 700
  18. 2210
  19. 1350
  20. 2850
  21. 1260
  22. 1300
  23. 800
  24. 600
  25. 660
  26. 200
  27. 450
  28. 2090
  29. 390
  30. 550
  31. 1800
  32. 650
  33. 1650
  34. 700
  35. 1350
  36. 630
  37. 400
  38. 1430
  39. 180
  40. 910

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