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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 513 · 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. 1.35 × 6 =
  2. 2.28 × 75 =
  3. 3.8 × 75 =
  4. 4.75 × 26 =
  5. 5.55 × 34 =
  6. 6.24 × 15 =
  7. 7.25 × 28 =
  8. 8.75 × 6 =
  9. 9.125 × 14 =
  10. 10.22 × 55 =
  11. 11.45 × 36 =
  12. 12.45 × 12 =
  13. 13.65 × 6 =
  14. 14.75 × 40 =
  15. 15.6 × 25 =
  16. 16.25 × 22 =
  17. 17.20 × 15 =
  18. 18.18 × 35 =
  19. 19.15 × 28 =
  20. 20.28 × 45 =
  21. 21.25 × 28 =
  22. 22.38 × 65 =
  23. 23.45 × 20 =
  24. 24.125 × 30 =
  25. 25.35 × 26 =
  26. 26.75 × 38 =
  27. 27.18 × 75 =
  28. 28.8 × 65 =
  29. 29.40 × 125 =
  30. 30.24 × 15 =
  31. 31.15 × 6 =
  32. 32.22 × 65 =
  33. 33.75 × 14 =
  34. 34.125 × 40 =
  35. 35.35 × 12 =
  36. 36.24 × 125 =
  37. 37.65 × 32 =
  38. 38.45 × 18 =
  39. 39.25 × 28 =
  40. 40.35 × 38 =

Answer key

  1. 210
  2. 2100
  3. 600
  4. 1950
  5. 1870
  6. 360
  7. 700
  8. 450
  9. 1750
  10. 1210
  11. 1620
  12. 540
  13. 390
  14. 3000
  15. 150
  16. 550
  17. 300
  18. 630
  19. 420
  20. 1260
  21. 700
  22. 2470
  23. 900
  24. 3750
  25. 910
  26. 2850
  27. 1350
  28. 520
  29. 5000
  30. 360
  31. 90
  32. 1430
  33. 1050
  34. 5000
  35. 420
  36. 3000
  37. 2080
  38. 810
  39. 700
  40. 1330

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