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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 596 · 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. 1.12 × 25 =
  2. 2.24 × 125 =
  3. 3.22 × 15 =
  4. 4.16 × 15 =
  5. 5.45 × 12 =
  6. 6.35 × 6 =
  7. 7.22 × 65 =
  8. 8.55 × 32 =
  9. 9.75 × 40 =
  10. 10.65 × 40 =
  11. 11.55 × 36 =
  12. 12.35 × 20 =
  13. 13.30 × 55 =
  14. 14.18 × 25 =
  15. 15.10 × 15 =
  16. 16.30 × 45 =
  17. 17.55 × 26 =
  18. 18.32 × 15 =
  19. 19.45 × 30 =
  20. 20.25 × 14 =
  21. 21.20 × 45 =
  22. 22.65 × 18 =
  23. 23.125 × 30 =
  24. 24.15 × 32 =
  25. 25.55 × 28 =
  26. 26.25 × 28 =
  27. 27.125 × 8 =
  28. 28.25 × 12 =
  29. 29.45 × 22 =
  30. 30.10 × 75 =
  31. 31.75 × 28 =
  32. 32.45 × 28 =
  33. 33.12 × 75 =
  34. 34.25 × 28 =
  35. 35.10 × 65 =
  36. 36.15 × 18 =
  37. 37.65 × 14 =
  38. 38.45 × 38 =
  39. 39.125 × 8 =
  40. 40.35 × 30 =

Answer key

  1. 300
  2. 3000
  3. 330
  4. 240
  5. 540
  6. 210
  7. 1430
  8. 1760
  9. 3000
  10. 2600
  11. 1980
  12. 700
  13. 1650
  14. 450
  15. 150
  16. 1350
  17. 1430
  18. 480
  19. 1350
  20. 350
  21. 900
  22. 1170
  23. 3750
  24. 480
  25. 1540
  26. 700
  27. 1000
  28. 300
  29. 990
  30. 750
  31. 2100
  32. 1260
  33. 900
  34. 700
  35. 650
  36. 270
  37. 910
  38. 1710
  39. 1000
  40. 1050

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