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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 953 · 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. 1.45 × 24 =
  2. 2.6 × 75 =
  3. 3.32 × 125 =
  4. 4.22 × 35 =
  5. 5.15 × 28 =
  6. 6.26 × 55 =
  7. 7.35 × 24 =
  8. 8.45 × 8 =
  9. 9.125 × 10 =
  10. 10.8 × 15 =
  11. 11.125 × 26 =
  12. 12.35 × 32 =
  13. 13.35 × 36 =
  14. 14.26 × 45 =
  15. 15.65 × 6 =
  16. 16.15 × 32 =
  17. 17.15 × 12 =
  18. 18.38 × 55 =
  19. 19.45 × 20 =
  20. 20.12 × 55 =
  21. 21.28 × 25 =
  22. 22.65 × 24 =
  23. 23.22 × 65 =
  24. 24.12 × 55 =
  25. 25.6 × 55 =
  26. 26.32 × 15 =
  27. 27.26 × 35 =
  28. 28.22 × 15 =
  29. 29.45 × 10 =
  30. 30.35 × 22 =
  31. 31.25 × 30 =
  32. 32.65 × 10 =
  33. 33.32 × 125 =
  34. 34.25 × 18 =
  35. 35.15 × 20 =
  36. 36.75 × 32 =
  37. 37.12 × 45 =
  38. 38.26 × 125 =
  39. 39.25 × 10 =
  40. 40.6 × 55 =

Answer key

  1. 1080
  2. 450
  3. 4000
  4. 770
  5. 420
  6. 1430
  7. 840
  8. 360
  9. 1250
  10. 120
  11. 3250
  12. 1120
  13. 1260
  14. 1170
  15. 390
  16. 480
  17. 180
  18. 2090
  19. 900
  20. 660
  21. 700
  22. 1560
  23. 1430
  24. 660
  25. 330
  26. 480
  27. 910
  28. 330
  29. 450
  30. 770
  31. 750
  32. 650
  33. 4000
  34. 450
  35. 300
  36. 2400
  37. 540
  38. 3250
  39. 250
  40. 330

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