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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 594 · 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. 1.24 × 125 =
  2. 2.12 × 75 =
  3. 3.32 × 25 =
  4. 4.14 × 55 =
  5. 5.65 × 8 =
  6. 6.25 × 34 =
  7. 7.25 × 14 =
  8. 8.15 × 20 =
  9. 9.20 × 125 =
  10. 10.16 × 35 =
  11. 11.75 × 38 =
  12. 12.55 × 24 =
  13. 13.20 × 45 =
  14. 14.20 × 25 =
  15. 15.125 × 40 =
  16. 16.25 × 12 =
  17. 17.10 × 65 =
  18. 18.10 × 45 =
  19. 19.35 × 12 =
  20. 20.16 × 45 =
  21. 21.26 × 25 =
  22. 22.12 × 65 =
  23. 23.15 × 8 =
  24. 24.65 × 20 =
  25. 25.40 × 75 =
  26. 26.36 × 65 =
  27. 27.75 × 12 =
  28. 28.40 × 25 =
  29. 29.125 × 6 =
  30. 30.38 × 45 =
  31. 31.55 × 28 =
  32. 32.15 × 26 =
  33. 33.65 × 6 =
  34. 34.40 × 35 =
  35. 35.38 × 25 =
  36. 36.45 × 18 =
  37. 37.20 × 55 =
  38. 38.125 × 20 =
  39. 39.30 × 75 =
  40. 40.22 × 25 =

Answer key

  1. 3000
  2. 900
  3. 800
  4. 770
  5. 520
  6. 850
  7. 350
  8. 300
  9. 2500
  10. 560
  11. 2850
  12. 1320
  13. 900
  14. 500
  15. 5000
  16. 300
  17. 650
  18. 450
  19. 420
  20. 720
  21. 650
  22. 780
  23. 120
  24. 1300
  25. 3000
  26. 2340
  27. 900
  28. 1000
  29. 750
  30. 1710
  31. 1540
  32. 390
  33. 390
  34. 1400
  35. 950
  36. 810
  37. 1100
  38. 2500
  39. 2250
  40. 550

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