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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 962 · 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. 1.36 × 45 =
  2. 2.16 × 55 =
  3. 3.55 × 8 =
  4. 4.34 × 35 =
  5. 5.24 × 25 =
  6. 6.14 × 75 =
  7. 7.65 × 6 =
  8. 8.55 × 28 =
  9. 9.15 × 22 =
  10. 10.22 × 35 =
  11. 11.6 × 125 =
  12. 12.35 × 12 =
  13. 13.18 × 55 =
  14. 14.32 × 125 =
  15. 15.25 × 22 =
  16. 16.36 × 35 =
  17. 17.12 × 55 =
  18. 18.45 × 12 =
  19. 19.10 × 15 =
  20. 20.55 × 6 =
  21. 21.26 × 25 =
  22. 22.38 × 15 =
  23. 23.45 × 8 =
  24. 24.34 × 125 =
  25. 25.8 × 15 =
  26. 26.8 × 55 =
  27. 27.35 × 22 =
  28. 28.25 × 36 =
  29. 29.12 × 35 =
  30. 30.15 × 22 =
  31. 31.65 × 30 =
  32. 32.40 × 25 =
  33. 33.55 × 16 =
  34. 34.35 × 34 =
  35. 35.40 × 45 =
  36. 36.125 × 28 =
  37. 37.35 × 12 =
  38. 38.8 × 125 =
  39. 39.45 × 20 =
  40. 40.45 × 24 =

Answer key

  1. 1620
  2. 880
  3. 440
  4. 1190
  5. 600
  6. 1050
  7. 390
  8. 1540
  9. 330
  10. 770
  11. 750
  12. 420
  13. 990
  14. 4000
  15. 550
  16. 1260
  17. 660
  18. 540
  19. 150
  20. 330
  21. 650
  22. 570
  23. 360
  24. 4250
  25. 120
  26. 440
  27. 770
  28. 900
  29. 420
  30. 330
  31. 1950
  32. 1000
  33. 880
  34. 1190
  35. 1800
  36. 3500
  37. 420
  38. 1000
  39. 900
  40. 1080

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