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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 34 · 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 × 30 =
  2. 2.125 × 10 =
  3. 3.45 × 40 =
  4. 4.25 × 16 =
  5. 5.15 × 10 =
  6. 6.45 × 20 =
  7. 7.125 × 20 =
  8. 8.38 × 35 =
  9. 9.8 × 55 =
  10. 10.34 × 25 =
  11. 11.15 × 36 =
  12. 12.25 × 14 =
  13. 13.8 × 35 =
  14. 14.28 × 15 =
  15. 15.45 × 14 =
  16. 16.14 × 35 =
  17. 17.55 × 8 =
  18. 18.45 × 36 =
  19. 19.125 × 8 =
  20. 20.65 × 34 =
  21. 21.18 × 15 =
  22. 22.12 × 55 =
  23. 23.34 × 25 =
  24. 24.18 × 75 =
  25. 25.15 × 22 =
  26. 26.25 × 40 =
  27. 27.22 × 125 =
  28. 28.26 × 75 =
  29. 29.125 × 34 =
  30. 30.36 × 45 =
  31. 31.55 × 14 =
  32. 32.45 × 40 =
  33. 33.26 × 25 =
  34. 34.24 × 65 =
  35. 35.75 × 14 =
  36. 36.28 × 55 =
  37. 37.26 × 25 =
  38. 38.35 × 26 =
  39. 39.25 × 12 =
  40. 40.34 × 15 =

Answer key

  1. 2250
  2. 1250
  3. 1800
  4. 400
  5. 150
  6. 900
  7. 2500
  8. 1330
  9. 440
  10. 850
  11. 540
  12. 350
  13. 280
  14. 420
  15. 630
  16. 490
  17. 440
  18. 1620
  19. 1000
  20. 2210
  21. 270
  22. 660
  23. 850
  24. 1350
  25. 330
  26. 1000
  27. 2750
  28. 1950
  29. 4250
  30. 1620
  31. 770
  32. 1800
  33. 650
  34. 1560
  35. 1050
  36. 1540
  37. 650
  38. 910
  39. 300
  40. 510

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