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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 894 · 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 × 6 =
  2. 2.125 × 34 =
  3. 3.125 × 14 =
  4. 4.38 × 125 =
  5. 5.75 × 22 =
  6. 6.36 × 55 =
  7. 7.35 × 38 =
  8. 8.25 × 36 =
  9. 9.40 × 45 =
  10. 10.65 × 34 =
  11. 11.14 × 35 =
  12. 12.28 × 25 =
  13. 13.20 × 45 =
  14. 14.40 × 35 =
  15. 15.45 × 32 =
  16. 16.15 × 20 =
  17. 17.15 × 22 =
  18. 18.125 × 14 =
  19. 19.16 × 15 =
  20. 20.34 × 25 =
  21. 21.125 × 36 =
  22. 22.16 × 15 =
  23. 23.25 × 22 =
  24. 24.20 × 25 =
  25. 25.40 × 45 =
  26. 26.25 × 10 =
  27. 27.35 × 40 =
  28. 28.25 × 8 =
  29. 29.12 × 35 =
  30. 30.6 × 15 =
  31. 31.12 × 15 =
  32. 32.10 × 55 =
  33. 33.45 × 12 =
  34. 34.35 × 34 =
  35. 35.24 × 35 =
  36. 36.75 × 10 =
  37. 37.30 × 15 =
  38. 38.125 × 22 =
  39. 39.25 × 24 =
  40. 40.36 × 35 =

Answer key

  1. 450
  2. 4250
  3. 1750
  4. 4750
  5. 1650
  6. 1980
  7. 1330
  8. 900
  9. 1800
  10. 2210
  11. 490
  12. 700
  13. 900
  14. 1400
  15. 1440
  16. 300
  17. 330
  18. 1750
  19. 240
  20. 850
  21. 4500
  22. 240
  23. 550
  24. 500
  25. 1800
  26. 250
  27. 1400
  28. 200
  29. 420
  30. 90
  31. 180
  32. 550
  33. 540
  34. 1190
  35. 840
  36. 750
  37. 450
  38. 2750
  39. 600
  40. 1260

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