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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 460 · 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. 1.75 × 36 =
  2. 2.36 × 125 =
  3. 3.22 × 75 =
  4. 4.22 × 35 =
  5. 5.125 × 18 =
  6. 6.75 × 28 =
  7. 7.16 × 15 =
  8. 8.125 × 16 =
  9. 9.75 × 24 =
  10. 10.10 × 25 =
  11. 11.32 × 45 =
  12. 12.40 × 15 =
  13. 13.45 × 12 =
  14. 14.16 × 15 =
  15. 15.125 × 6 =
  16. 16.18 × 45 =
  17. 17.75 × 16 =
  18. 18.15 × 30 =
  19. 19.25 × 28 =
  20. 20.34 × 35 =
  21. 21.8 × 15 =
  22. 22.35 × 12 =
  23. 23.24 × 15 =
  24. 24.35 × 30 =
  25. 25.24 × 15 =
  26. 26.65 × 10 =
  27. 27.36 × 65 =
  28. 28.36 × 25 =
  29. 29.75 × 24 =
  30. 30.75 × 20 =
  31. 31.30 × 45 =
  32. 32.65 × 6 =
  33. 33.65 × 6 =
  34. 34.34 × 15 =
  35. 35.35 × 12 =
  36. 36.65 × 6 =
  37. 37.65 × 34 =
  38. 38.15 × 38 =
  39. 39.34 × 15 =
  40. 40.35 × 8 =

Answer key

  1. 2700
  2. 4500
  3. 1650
  4. 770
  5. 2250
  6. 2100
  7. 240
  8. 2000
  9. 1800
  10. 250
  11. 1440
  12. 600
  13. 540
  14. 240
  15. 750
  16. 810
  17. 1200
  18. 450
  19. 700
  20. 1190
  21. 120
  22. 420
  23. 360
  24. 1050
  25. 360
  26. 650
  27. 2340
  28. 900
  29. 1800
  30. 1500
  31. 1350
  32. 390
  33. 390
  34. 510
  35. 420
  36. 390
  37. 2210
  38. 570
  39. 510
  40. 280

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