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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 595 · 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. 1.14 × 15 =
  2. 2.55 × 40 =
  3. 3.36 × 25 =
  4. 4.15 × 32 =
  5. 5.25 × 32 =
  6. 6.45 × 38 =
  7. 7.28 × 55 =
  8. 8.34 × 65 =
  9. 9.25 × 8 =
  10. 10.75 × 38 =
  11. 11.25 × 38 =
  12. 12.34 × 15 =
  13. 13.20 × 25 =
  14. 14.15 × 26 =
  15. 15.55 × 30 =
  16. 16.26 × 55 =
  17. 17.65 × 8 =
  18. 18.75 × 12 =
  19. 19.125 × 32 =
  20. 20.36 × 45 =
  21. 21.10 × 25 =
  22. 22.25 × 40 =
  23. 23.18 × 15 =
  24. 24.40 × 25 =
  25. 25.35 × 10 =
  26. 26.125 × 36 =
  27. 27.15 × 12 =
  28. 28.22 × 35 =
  29. 29.10 × 35 =
  30. 30.24 × 25 =
  31. 31.65 × 22 =
  32. 32.45 × 12 =
  33. 33.55 × 8 =
  34. 34.15 × 32 =
  35. 35.35 × 6 =
  36. 36.15 × 20 =
  37. 37.15 × 28 =
  38. 38.6 × 45 =
  39. 39.24 × 45 =
  40. 40.25 × 16 =

Answer key

  1. 210
  2. 2200
  3. 900
  4. 480
  5. 800
  6. 1710
  7. 1540
  8. 2210
  9. 200
  10. 2850
  11. 950
  12. 510
  13. 500
  14. 390
  15. 1650
  16. 1430
  17. 520
  18. 900
  19. 4000
  20. 1620
  21. 250
  22. 1000
  23. 270
  24. 1000
  25. 350
  26. 4500
  27. 180
  28. 770
  29. 350
  30. 600
  31. 1430
  32. 540
  33. 440
  34. 480
  35. 210
  36. 300
  37. 420
  38. 270
  39. 1080
  40. 400

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