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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 852 · 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. 1.65 × 14 =
  2. 2.25 × 12 =
  3. 3.30 × 125 =
  4. 4.35 × 22 =
  5. 5.10 × 25 =
  6. 6.24 × 125 =
  7. 7.14 × 15 =
  8. 8.34 × 65 =
  9. 9.35 × 30 =
  10. 10.125 × 6 =
  11. 11.28 × 35 =
  12. 12.38 × 45 =
  13. 13.15 × 12 =
  14. 14.34 × 25 =
  15. 15.26 × 75 =
  16. 16.32 × 25 =
  17. 17.75 × 22 =
  18. 18.65 × 10 =
  19. 19.26 × 25 =
  20. 20.40 × 125 =
  21. 21.20 × 75 =
  22. 22.22 × 125 =
  23. 23.26 × 55 =
  24. 24.10 × 25 =
  25. 25.125 × 32 =
  26. 26.14 × 55 =
  27. 27.15 × 8 =
  28. 28.15 × 22 =
  29. 29.125 × 32 =
  30. 30.45 × 38 =
  31. 31.12 × 35 =
  32. 32.12 × 35 =
  33. 33.75 × 10 =
  34. 34.22 × 15 =
  35. 35.25 × 22 =
  36. 36.25 × 30 =
  37. 37.30 × 55 =
  38. 38.55 × 40 =
  39. 39.35 × 26 =
  40. 40.55 × 34 =

Answer key

  1. 910
  2. 300
  3. 3750
  4. 770
  5. 250
  6. 3000
  7. 210
  8. 2210
  9. 1050
  10. 750
  11. 980
  12. 1710
  13. 180
  14. 850
  15. 1950
  16. 800
  17. 1650
  18. 650
  19. 650
  20. 5000
  21. 1500
  22. 2750
  23. 1430
  24. 250
  25. 4000
  26. 770
  27. 120
  28. 330
  29. 4000
  30. 1710
  31. 420
  32. 420
  33. 750
  34. 330
  35. 550
  36. 750
  37. 1650
  38. 2200
  39. 910
  40. 1870

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