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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 189 · 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. 1.25 × 20 =
  2. 2.34 × 45 =
  3. 3.16 × 75 =
  4. 4.6 × 15 =
  5. 5.65 × 10 =
  6. 6.35 × 26 =
  7. 7.25 × 16 =
  8. 8.25 × 16 =
  9. 9.40 × 25 =
  10. 10.20 × 65 =
  11. 11.30 × 15 =
  12. 12.12 × 55 =
  13. 13.20 × 15 =
  14. 14.65 × 26 =
  15. 15.16 × 55 =
  16. 16.30 × 15 =
  17. 17.34 × 15 =
  18. 18.36 × 15 =
  19. 19.22 × 45 =
  20. 20.36 × 15 =
  21. 21.30 × 65 =
  22. 22.28 × 25 =
  23. 23.26 × 25 =
  24. 24.26 × 75 =
  25. 25.15 × 38 =
  26. 26.36 × 25 =
  27. 27.40 × 35 =
  28. 28.16 × 75 =
  29. 29.45 × 10 =
  30. 30.38 × 15 =
  31. 31.24 × 125 =
  32. 32.125 × 22 =
  33. 33.24 × 65 =
  34. 34.20 × 35 =
  35. 35.55 × 34 =
  36. 36.65 × 20 =
  37. 37.22 × 25 =
  38. 38.26 × 15 =
  39. 39.32 × 15 =
  40. 40.125 × 38 =

Answer key

  1. 500
  2. 1530
  3. 1200
  4. 90
  5. 650
  6. 910
  7. 400
  8. 400
  9. 1000
  10. 1300
  11. 450
  12. 660
  13. 300
  14. 1690
  15. 880
  16. 450
  17. 510
  18. 540
  19. 990
  20. 540
  21. 1950
  22. 700
  23. 650
  24. 1950
  25. 570
  26. 900
  27. 1400
  28. 1200
  29. 450
  30. 570
  31. 3000
  32. 2750
  33. 1560
  34. 700
  35. 1870
  36. 1300
  37. 550
  38. 390
  39. 480
  40. 4750

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