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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 334 · 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. 1.75 × 32 =
  2. 2.34 × 25 =
  3. 3.45 × 38 =
  4. 4.125 × 6 =
  5. 5.12 × 75 =
  6. 6.65 × 18 =
  7. 7.15 × 36 =
  8. 8.32 × 35 =
  9. 9.35 × 10 =
  10. 10.55 × 6 =
  11. 11.22 × 55 =
  12. 12.55 × 10 =
  13. 13.6 × 15 =
  14. 14.45 × 38 =
  15. 15.8 × 15 =
  16. 16.55 × 36 =
  17. 17.10 × 45 =
  18. 18.30 × 75 =
  19. 19.22 × 65 =
  20. 20.125 × 36 =
  21. 21.12 × 55 =
  22. 22.75 × 22 =
  23. 23.55 × 20 =
  24. 24.26 × 35 =
  25. 25.45 × 38 =
  26. 26.14 × 125 =
  27. 27.35 × 16 =
  28. 28.55 × 14 =
  29. 29.125 × 38 =
  30. 30.8 × 15 =
  31. 31.16 × 65 =
  32. 32.24 × 25 =
  33. 33.65 × 28 =
  34. 34.40 × 55 =
  35. 35.75 × 36 =
  36. 36.14 × 75 =
  37. 37.28 × 65 =
  38. 38.38 × 45 =
  39. 39.6 × 25 =
  40. 40.26 × 25 =

Answer key

  1. 2400
  2. 850
  3. 1710
  4. 750
  5. 900
  6. 1170
  7. 540
  8. 1120
  9. 350
  10. 330
  11. 1210
  12. 550
  13. 90
  14. 1710
  15. 120
  16. 1980
  17. 450
  18. 2250
  19. 1430
  20. 4500
  21. 660
  22. 1650
  23. 1100
  24. 910
  25. 1710
  26. 1750
  27. 560
  28. 770
  29. 4750
  30. 120
  31. 1040
  32. 600
  33. 1820
  34. 2200
  35. 2700
  36. 1050
  37. 1820
  38. 1710
  39. 150
  40. 650

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