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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 209 · 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. 1.10 × 75 =
  2. 2.16 × 35 =
  3. 3.35 × 6 =
  4. 4.65 × 8 =
  5. 5.65 × 36 =
  6. 6.12 × 25 =
  7. 7.35 × 14 =
  8. 8.55 × 12 =
  9. 9.55 × 8 =
  10. 10.14 × 55 =
  11. 11.55 × 20 =
  12. 12.125 × 14 =
  13. 13.55 × 16 =
  14. 14.20 × 45 =
  15. 15.15 × 40 =
  16. 16.28 × 45 =
  17. 17.75 × 6 =
  18. 18.45 × 26 =
  19. 19.36 × 55 =
  20. 20.30 × 45 =
  21. 21.26 × 15 =
  22. 22.65 × 40 =
  23. 23.36 × 125 =
  24. 24.28 × 15 =
  25. 25.38 × 55 =
  26. 26.45 × 24 =
  27. 27.15 × 40 =
  28. 28.20 × 15 =
  29. 29.75 × 20 =
  30. 30.25 × 8 =
  31. 31.15 × 24 =
  32. 32.12 × 55 =
  33. 33.65 × 36 =
  34. 34.55 × 28 =
  35. 35.18 × 15 =
  36. 36.45 × 8 =
  37. 37.15 × 36 =
  38. 38.65 × 34 =
  39. 39.34 × 15 =
  40. 40.20 × 45 =

Answer key

  1. 750
  2. 560
  3. 210
  4. 520
  5. 2340
  6. 300
  7. 490
  8. 660
  9. 440
  10. 770
  11. 1100
  12. 1750
  13. 880
  14. 900
  15. 600
  16. 1260
  17. 450
  18. 1170
  19. 1980
  20. 1350
  21. 390
  22. 2600
  23. 4500
  24. 420
  25. 2090
  26. 1080
  27. 600
  28. 300
  29. 1500
  30. 200
  31. 360
  32. 660
  33. 2340
  34. 1540
  35. 270
  36. 360
  37. 540
  38. 2210
  39. 510
  40. 900

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