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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 993 · 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. 1.16 × 65 =
  2. 2.20 × 125 =
  3. 3.25 × 22 =
  4. 4.45 × 36 =
  5. 5.25 × 6 =
  6. 6.65 × 10 =
  7. 7.75 × 26 =
  8. 8.15 × 6 =
  9. 9.125 × 36 =
  10. 10.25 × 20 =
  11. 11.125 × 8 =
  12. 12.10 × 75 =
  13. 13.20 × 25 =
  14. 14.25 × 36 =
  15. 15.75 × 22 =
  16. 16.55 × 12 =
  17. 17.35 × 6 =
  18. 18.25 × 38 =
  19. 19.30 × 45 =
  20. 20.45 × 38 =
  21. 21.65 × 28 =
  22. 22.125 × 8 =
  23. 23.6 × 55 =
  24. 24.15 × 16 =
  25. 25.35 × 34 =
  26. 26.6 × 25 =
  27. 27.65 × 14 =
  28. 28.8 × 15 =
  29. 29.12 × 35 =
  30. 30.55 × 26 =
  31. 31.125 × 14 =
  32. 32.125 × 12 =
  33. 33.55 × 16 =
  34. 34.18 × 65 =
  35. 35.36 × 35 =
  36. 36.38 × 45 =
  37. 37.35 × 10 =
  38. 38.24 × 15 =
  39. 39.20 × 65 =
  40. 40.15 × 12 =

Answer key

  1. 1040
  2. 2500
  3. 550
  4. 1620
  5. 150
  6. 650
  7. 1950
  8. 90
  9. 4500
  10. 500
  11. 1000
  12. 750
  13. 500
  14. 900
  15. 1650
  16. 660
  17. 210
  18. 950
  19. 1350
  20. 1710
  21. 1820
  22. 1000
  23. 330
  24. 240
  25. 1190
  26. 150
  27. 910
  28. 120
  29. 420
  30. 1430
  31. 1750
  32. 1500
  33. 880
  34. 1170
  35. 1260
  36. 1710
  37. 350
  38. 360
  39. 1300
  40. 180

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