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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 519 · 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. 1.16 × 35 =
  2. 2.75 × 18 =
  3. 3.10 × 45 =
  4. 4.125 × 30 =
  5. 5.24 × 65 =
  6. 6.65 × 36 =
  7. 7.45 × 28 =
  8. 8.18 × 35 =
  9. 9.45 × 18 =
  10. 10.28 × 75 =
  11. 11.45 × 16 =
  12. 12.16 × 125 =
  13. 13.15 × 14 =
  14. 14.15 × 36 =
  15. 15.16 × 15 =
  16. 16.34 × 45 =
  17. 17.14 × 25 =
  18. 18.16 × 65 =
  19. 19.15 × 22 =
  20. 20.22 × 55 =
  21. 21.75 × 8 =
  22. 22.45 × 10 =
  23. 23.30 × 25 =
  24. 24.25 × 6 =
  25. 25.25 × 36 =
  26. 26.32 × 45 =
  27. 27.6 × 75 =
  28. 28.125 × 36 =
  29. 29.16 × 45 =
  30. 30.36 × 55 =
  31. 31.75 × 24 =
  32. 32.35 × 34 =
  33. 33.25 × 28 =
  34. 34.25 × 34 =
  35. 35.26 × 75 =
  36. 36.125 × 8 =
  37. 37.55 × 34 =
  38. 38.14 × 125 =
  39. 39.38 × 15 =
  40. 40.14 × 35 =

Answer key

  1. 560
  2. 1350
  3. 450
  4. 3750
  5. 1560
  6. 2340
  7. 1260
  8. 630
  9. 810
  10. 2100
  11. 720
  12. 2000
  13. 210
  14. 540
  15. 240
  16. 1530
  17. 350
  18. 1040
  19. 330
  20. 1210
  21. 600
  22. 450
  23. 750
  24. 150
  25. 900
  26. 1440
  27. 450
  28. 4500
  29. 720
  30. 1980
  31. 1800
  32. 1190
  33. 700
  34. 850
  35. 1950
  36. 1000
  37. 1870
  38. 1750
  39. 570
  40. 490

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