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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 914 · 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. 1.25 × 8 =
  2. 2.65 × 28 =
  3. 3.65 × 18 =
  4. 4.36 × 15 =
  5. 5.75 × 30 =
  6. 6.34 × 75 =
  7. 7.25 × 28 =
  8. 8.125 × 24 =
  9. 9.20 × 15 =
  10. 10.55 × 20 =
  11. 11.6 × 25 =
  12. 12.65 × 26 =
  13. 13.35 × 38 =
  14. 14.15 × 12 =
  15. 15.15 × 26 =
  16. 16.32 × 65 =
  17. 17.34 × 45 =
  18. 18.35 × 22 =
  19. 19.36 × 55 =
  20. 20.45 × 6 =
  21. 21.20 × 65 =
  22. 22.15 × 32 =
  23. 23.22 × 15 =
  24. 24.25 × 26 =
  25. 25.30 × 125 =
  26. 26.25 × 10 =
  27. 27.10 × 25 =
  28. 28.65 × 12 =
  29. 29.15 × 20 =
  30. 30.14 × 55 =
  31. 31.55 × 10 =
  32. 32.65 × 26 =
  33. 33.6 × 55 =
  34. 34.14 × 125 =
  35. 35.45 × 28 =
  36. 36.6 × 25 =
  37. 37.65 × 8 =
  38. 38.10 × 35 =
  39. 39.12 × 45 =
  40. 40.14 × 55 =

Answer key

  1. 200
  2. 1820
  3. 1170
  4. 540
  5. 2250
  6. 2550
  7. 700
  8. 3000
  9. 300
  10. 1100
  11. 150
  12. 1690
  13. 1330
  14. 180
  15. 390
  16. 2080
  17. 1530
  18. 770
  19. 1980
  20. 270
  21. 1300
  22. 480
  23. 330
  24. 650
  25. 3750
  26. 250
  27. 250
  28. 780
  29. 300
  30. 770
  31. 550
  32. 1690
  33. 330
  34. 1750
  35. 1260
  36. 150
  37. 520
  38. 350
  39. 540
  40. 770

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