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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 925 · 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 × 22 =
  2. 2.22 × 35 =
  3. 3.125 × 24 =
  4. 4.24 × 25 =
  5. 5.25 × 10 =
  6. 6.65 × 22 =
  7. 7.45 × 38 =
  8. 8.10 × 125 =
  9. 9.25 × 8 =
  10. 10.6 × 15 =
  11. 11.45 × 26 =
  12. 12.125 × 22 =
  13. 13.55 × 6 =
  14. 14.25 × 36 =
  15. 15.6 × 55 =
  16. 16.34 × 55 =
  17. 17.36 × 45 =
  18. 18.15 × 30 =
  19. 19.125 × 40 =
  20. 20.20 × 125 =
  21. 21.22 × 125 =
  22. 22.65 × 18 =
  23. 23.65 × 10 =
  24. 24.25 × 8 =
  25. 25.75 × 36 =
  26. 26.24 × 25 =
  27. 27.55 × 6 =
  28. 28.75 × 20 =
  29. 29.25 × 14 =
  30. 30.14 × 125 =
  31. 31.55 × 8 =
  32. 32.55 × 10 =
  33. 33.75 × 20 =
  34. 34.15 × 38 =
  35. 35.125 × 20 =
  36. 36.15 × 30 =
  37. 37.125 × 32 =
  38. 38.75 × 26 =
  39. 39.15 × 22 =
  40. 40.15 × 34 =

Answer key

  1. 1650
  2. 770
  3. 3000
  4. 600
  5. 250
  6. 1430
  7. 1710
  8. 1250
  9. 200
  10. 90
  11. 1170
  12. 2750
  13. 330
  14. 900
  15. 330
  16. 1870
  17. 1620
  18. 450
  19. 5000
  20. 2500
  21. 2750
  22. 1170
  23. 650
  24. 200
  25. 2700
  26. 600
  27. 330
  28. 1500
  29. 350
  30. 1750
  31. 440
  32. 550
  33. 1500
  34. 570
  35. 2500
  36. 450
  37. 4000
  38. 1950
  39. 330
  40. 510

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