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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 374 · 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. 1.125 × 10 =
  2. 2.6 × 35 =
  3. 3.34 × 125 =
  4. 4.8 × 55 =
  5. 5.32 × 55 =
  6. 6.75 × 12 =
  7. 7.55 × 24 =
  8. 8.10 × 35 =
  9. 9.18 × 25 =
  10. 10.45 × 18 =
  11. 11.36 × 15 =
  12. 12.125 × 40 =
  13. 13.26 × 45 =
  14. 14.16 × 45 =
  15. 15.25 × 38 =
  16. 16.40 × 75 =
  17. 17.14 × 125 =
  18. 18.45 × 26 =
  19. 19.125 × 14 =
  20. 20.35 × 8 =
  21. 21.32 × 65 =
  22. 22.125 × 8 =
  23. 23.8 × 35 =
  24. 24.75 × 6 =
  25. 25.75 × 18 =
  26. 26.35 × 14 =
  27. 27.15 × 24 =
  28. 28.36 × 15 =
  29. 29.55 × 10 =
  30. 30.22 × 15 =
  31. 31.12 × 65 =
  32. 32.65 × 14 =
  33. 33.14 × 125 =
  34. 34.55 × 8 =
  35. 35.45 × 18 =
  36. 36.55 × 22 =
  37. 37.25 × 14 =
  38. 38.18 × 65 =
  39. 39.45 × 8 =
  40. 40.22 × 75 =

Answer key

  1. 1250
  2. 210
  3. 4250
  4. 440
  5. 1760
  6. 900
  7. 1320
  8. 350
  9. 450
  10. 810
  11. 540
  12. 5000
  13. 1170
  14. 720
  15. 950
  16. 3000
  17. 1750
  18. 1170
  19. 1750
  20. 280
  21. 2080
  22. 1000
  23. 280
  24. 450
  25. 1350
  26. 490
  27. 360
  28. 540
  29. 550
  30. 330
  31. 780
  32. 910
  33. 1750
  34. 440
  35. 810
  36. 1210
  37. 350
  38. 1170
  39. 360
  40. 1650

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