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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 274 · 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. 1.12 × 45 =
  2. 2.12 × 35 =
  3. 3.28 × 55 =
  4. 4.24 × 35 =
  5. 5.35 × 14 =
  6. 6.125 × 40 =
  7. 7.45 × 26 =
  8. 8.14 × 15 =
  9. 9.16 × 45 =
  10. 10.36 × 55 =
  11. 11.6 × 15 =
  12. 12.16 × 25 =
  13. 13.65 × 30 =
  14. 14.35 × 14 =
  15. 15.14 × 15 =
  16. 16.24 × 35 =
  17. 17.55 × 20 =
  18. 18.35 × 20 =
  19. 19.45 × 8 =
  20. 20.55 × 32 =
  21. 21.40 × 15 =
  22. 22.25 × 30 =
  23. 23.65 × 8 =
  24. 24.45 × 20 =
  25. 25.12 × 25 =
  26. 26.65 × 26 =
  27. 27.14 × 35 =
  28. 28.45 × 24 =
  29. 29.35 × 14 =
  30. 30.15 × 28 =
  31. 31.25 × 26 =
  32. 32.34 × 15 =
  33. 33.55 × 28 =
  34. 34.32 × 35 =
  35. 35.12 × 55 =
  36. 36.35 × 12 =
  37. 37.25 × 8 =
  38. 38.55 × 16 =
  39. 39.45 × 26 =
  40. 40.24 × 45 =

Answer key

  1. 540
  2. 420
  3. 1540
  4. 840
  5. 490
  6. 5000
  7. 1170
  8. 210
  9. 720
  10. 1980
  11. 90
  12. 400
  13. 1950
  14. 490
  15. 210
  16. 840
  17. 1100
  18. 700
  19. 360
  20. 1760
  21. 600
  22. 750
  23. 520
  24. 900
  25. 300
  26. 1690
  27. 490
  28. 1080
  29. 490
  30. 420
  31. 650
  32. 510
  33. 1540
  34. 1120
  35. 660
  36. 420
  37. 200
  38. 880
  39. 1170
  40. 1080

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