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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 896 · 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. 1.75 × 32 =
  2. 2.22 × 35 =
  3. 3.36 × 35 =
  4. 4.10 × 75 =
  5. 5.25 × 12 =
  6. 6.75 × 22 =
  7. 7.35 × 8 =
  8. 8.25 × 10 =
  9. 9.35 × 34 =
  10. 10.6 × 45 =
  11. 11.15 × 6 =
  12. 12.25 × 26 =
  13. 13.14 × 25 =
  14. 14.20 × 65 =
  15. 15.55 × 28 =
  16. 16.15 × 18 =
  17. 17.8 × 55 =
  18. 18.10 × 65 =
  19. 19.75 × 14 =
  20. 20.10 × 75 =
  21. 21.15 × 26 =
  22. 22.25 × 40 =
  23. 23.36 × 15 =
  24. 24.12 × 25 =
  25. 25.32 × 125 =
  26. 26.38 × 25 =
  27. 27.20 × 75 =
  28. 28.75 × 14 =
  29. 29.15 × 28 =
  30. 30.65 × 24 =
  31. 31.45 × 10 =
  32. 32.38 × 25 =
  33. 33.35 × 10 =
  34. 34.6 × 125 =
  35. 35.125 × 6 =
  36. 36.45 × 36 =
  37. 37.36 × 15 =
  38. 38.22 × 45 =
  39. 39.25 × 32 =
  40. 40.65 × 24 =

Answer key

  1. 2400
  2. 770
  3. 1260
  4. 750
  5. 300
  6. 1650
  7. 280
  8. 250
  9. 1190
  10. 270
  11. 90
  12. 650
  13. 350
  14. 1300
  15. 1540
  16. 270
  17. 440
  18. 650
  19. 1050
  20. 750
  21. 390
  22. 1000
  23. 540
  24. 300
  25. 4000
  26. 950
  27. 1500
  28. 1050
  29. 420
  30. 1560
  31. 450
  32. 950
  33. 350
  34. 750
  35. 750
  36. 1620
  37. 540
  38. 990
  39. 800
  40. 1560

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