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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 805 · 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. 1.12 × 55 =
  2. 2.36 × 35 =
  3. 3.10 × 65 =
  4. 4.55 × 34 =
  5. 5.26 × 75 =
  6. 6.30 × 25 =
  7. 7.10 × 125 =
  8. 8.55 × 38 =
  9. 9.65 × 30 =
  10. 10.18 × 25 =
  11. 11.28 × 125 =
  12. 12.55 × 32 =
  13. 13.12 × 25 =
  14. 14.65 × 34 =
  15. 15.55 × 14 =
  16. 16.55 × 34 =
  17. 17.16 × 75 =
  18. 18.75 × 26 =
  19. 19.55 × 24 =
  20. 20.12 × 35 =
  21. 21.18 × 25 =
  22. 22.125 × 36 =
  23. 23.14 × 125 =
  24. 24.25 × 20 =
  25. 25.15 × 36 =
  26. 26.32 × 65 =
  27. 27.10 × 55 =
  28. 28.65 × 26 =
  29. 29.26 × 35 =
  30. 30.15 × 38 =
  31. 31.15 × 36 =
  32. 32.125 × 18 =
  33. 33.25 × 16 =
  34. 34.65 × 6 =
  35. 35.55 × 16 =
  36. 36.75 × 6 =
  37. 37.34 × 125 =
  38. 38.14 × 35 =
  39. 39.22 × 55 =
  40. 40.55 × 16 =

Answer key

  1. 660
  2. 1260
  3. 650
  4. 1870
  5. 1950
  6. 750
  7. 1250
  8. 2090
  9. 1950
  10. 450
  11. 3500
  12. 1760
  13. 300
  14. 2210
  15. 770
  16. 1870
  17. 1200
  18. 1950
  19. 1320
  20. 420
  21. 450
  22. 4500
  23. 1750
  24. 500
  25. 540
  26. 2080
  27. 550
  28. 1690
  29. 910
  30. 570
  31. 540
  32. 2250
  33. 400
  34. 390
  35. 880
  36. 450
  37. 4250
  38. 490
  39. 1210
  40. 880

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