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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 158 · 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. 1.55 × 28 =
  2. 2.125 × 16 =
  3. 3.10 × 75 =
  4. 4.14 × 55 =
  5. 5.65 × 8 =
  6. 6.8 × 125 =
  7. 7.65 × 22 =
  8. 8.34 × 25 =
  9. 9.25 × 26 =
  10. 10.75 × 32 =
  11. 11.15 × 30 =
  12. 12.55 × 12 =
  13. 13.30 × 55 =
  14. 14.40 × 35 =
  15. 15.16 × 25 =
  16. 16.45 × 30 =
  17. 17.25 × 10 =
  18. 18.20 × 45 =
  19. 19.15 × 20 =
  20. 20.38 × 125 =
  21. 21.35 × 6 =
  22. 22.34 × 25 =
  23. 23.125 × 8 =
  24. 24.18 × 125 =
  25. 25.15 × 22 =
  26. 26.35 × 28 =
  27. 27.38 × 45 =
  28. 28.10 × 45 =
  29. 29.25 × 22 =
  30. 30.14 × 65 =
  31. 31.32 × 45 =
  32. 32.32 × 45 =
  33. 33.10 × 55 =
  34. 34.125 × 40 =
  35. 35.15 × 16 =
  36. 36.25 × 24 =
  37. 37.35 × 14 =
  38. 38.8 × 75 =
  39. 39.55 × 28 =
  40. 40.36 × 45 =

Answer key

  1. 1540
  2. 2000
  3. 750
  4. 770
  5. 520
  6. 1000
  7. 1430
  8. 850
  9. 650
  10. 2400
  11. 450
  12. 660
  13. 1650
  14. 1400
  15. 400
  16. 1350
  17. 250
  18. 900
  19. 300
  20. 4750
  21. 210
  22. 850
  23. 1000
  24. 2250
  25. 330
  26. 980
  27. 1710
  28. 450
  29. 550
  30. 910
  31. 1440
  32. 1440
  33. 550
  34. 5000
  35. 240
  36. 600
  37. 490
  38. 600
  39. 1540
  40. 1620

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