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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 627 · 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. 1.32 × 45 =
  2. 2.22 × 65 =
  3. 3.20 × 65 =
  4. 4.45 × 10 =
  5. 5.35 × 16 =
  6. 6.45 × 38 =
  7. 7.34 × 25 =
  8. 8.65 × 14 =
  9. 9.75 × 6 =
  10. 10.55 × 8 =
  11. 11.55 × 32 =
  12. 12.65 × 8 =
  13. 13.16 × 25 =
  14. 14.10 × 15 =
  15. 15.26 × 15 =
  16. 16.65 × 18 =
  17. 17.125 × 30 =
  18. 18.36 × 25 =
  19. 19.40 × 55 =
  20. 20.25 × 18 =
  21. 21.25 × 6 =
  22. 22.12 × 125 =
  23. 23.65 × 16 =
  24. 24.14 × 15 =
  25. 25.6 × 65 =
  26. 26.45 × 6 =
  27. 27.26 × 75 =
  28. 28.25 × 10 =
  29. 29.35 × 18 =
  30. 30.20 × 125 =
  31. 31.25 × 20 =
  32. 32.55 × 24 =
  33. 33.45 × 10 =
  34. 34.32 × 25 =
  35. 35.55 × 36 =
  36. 36.55 × 28 =
  37. 37.25 × 16 =
  38. 38.65 × 34 =
  39. 39.36 × 35 =
  40. 40.75 × 6 =

Answer key

  1. 1440
  2. 1430
  3. 1300
  4. 450
  5. 560
  6. 1710
  7. 850
  8. 910
  9. 450
  10. 440
  11. 1760
  12. 520
  13. 400
  14. 150
  15. 390
  16. 1170
  17. 3750
  18. 900
  19. 2200
  20. 450
  21. 150
  22. 1500
  23. 1040
  24. 210
  25. 390
  26. 270
  27. 1950
  28. 250
  29. 630
  30. 2500
  31. 500
  32. 1320
  33. 450
  34. 800
  35. 1980
  36. 1540
  37. 400
  38. 2210
  39. 1260
  40. 450

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