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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 495 · 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. 1.55 × 22 =
  2. 2.75 × 34 =
  3. 3.65 × 30 =
  4. 4.15 × 20 =
  5. 5.15 × 40 =
  6. 6.15 × 8 =
  7. 7.15 × 30 =
  8. 8.15 × 38 =
  9. 9.22 × 25 =
  10. 10.45 × 20 =
  11. 11.75 × 32 =
  12. 12.55 × 14 =
  13. 13.36 × 25 =
  14. 14.34 × 15 =
  15. 15.18 × 15 =
  16. 16.35 × 34 =
  17. 17.34 × 125 =
  18. 18.25 × 22 =
  19. 19.15 × 28 =
  20. 20.30 × 65 =
  21. 21.65 × 12 =
  22. 22.16 × 35 =
  23. 23.75 × 26 =
  24. 24.35 × 28 =
  25. 25.15 × 12 =
  26. 26.18 × 55 =
  27. 27.22 × 35 =
  28. 28.28 × 45 =
  29. 29.30 × 25 =
  30. 30.38 × 125 =
  31. 31.15 × 10 =
  32. 32.14 × 75 =
  33. 33.12 × 55 =
  34. 34.45 × 10 =
  35. 35.25 × 40 =
  36. 36.25 × 22 =
  37. 37.65 × 10 =
  38. 38.12 × 55 =
  39. 39.65 × 8 =
  40. 40.8 × 125 =

Answer key

  1. 1210
  2. 2550
  3. 1950
  4. 300
  5. 600
  6. 120
  7. 450
  8. 570
  9. 550
  10. 900
  11. 2400
  12. 770
  13. 900
  14. 510
  15. 270
  16. 1190
  17. 4250
  18. 550
  19. 420
  20. 1950
  21. 780
  22. 560
  23. 1950
  24. 980
  25. 180
  26. 990
  27. 770
  28. 1260
  29. 750
  30. 4750
  31. 150
  32. 1050
  33. 660
  34. 450
  35. 1000
  36. 550
  37. 650
  38. 660
  39. 520
  40. 1000

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