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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 961 · 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. 1.26 × 55 =
  2. 2.65 × 16 =
  3. 3.125 × 26 =
  4. 4.26 × 75 =
  5. 5.65 × 22 =
  6. 6.25 × 16 =
  7. 7.35 × 20 =
  8. 8.12 × 15 =
  9. 9.38 × 65 =
  10. 10.35 × 26 =
  11. 11.25 × 18 =
  12. 12.65 × 10 =
  13. 13.125 × 12 =
  14. 14.30 × 25 =
  15. 15.25 × 40 =
  16. 16.30 × 15 =
  17. 17.25 × 34 =
  18. 18.34 × 35 =
  19. 19.15 × 16 =
  20. 20.75 × 22 =
  21. 21.25 × 12 =
  22. 22.65 × 38 =
  23. 23.65 × 16 =
  24. 24.25 × 8 =
  25. 25.24 × 25 =
  26. 26.20 × 55 =
  27. 27.45 × 34 =
  28. 28.26 × 125 =
  29. 29.15 × 12 =
  30. 30.35 × 24 =
  31. 31.20 × 75 =
  32. 32.75 × 10 =
  33. 33.30 × 65 =
  34. 34.45 × 14 =
  35. 35.34 × 35 =
  36. 36.55 × 20 =
  37. 37.45 × 28 =
  38. 38.45 × 18 =
  39. 39.45 × 8 =
  40. 40.20 × 45 =

Answer key

  1. 1430
  2. 1040
  3. 3250
  4. 1950
  5. 1430
  6. 400
  7. 700
  8. 180
  9. 2470
  10. 910
  11. 450
  12. 650
  13. 1500
  14. 750
  15. 1000
  16. 450
  17. 850
  18. 1190
  19. 240
  20. 1650
  21. 300
  22. 2470
  23. 1040
  24. 200
  25. 600
  26. 1100
  27. 1530
  28. 3250
  29. 180
  30. 840
  31. 1500
  32. 750
  33. 1950
  34. 630
  35. 1190
  36. 1100
  37. 1260
  38. 810
  39. 360
  40. 900

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