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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 412 · 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. 1.40 × 25 =
  2. 2.20 × 45 =
  3. 3.10 × 125 =
  4. 4.25 × 10 =
  5. 5.65 × 30 =
  6. 6.16 × 65 =
  7. 7.36 × 125 =
  8. 8.34 × 55 =
  9. 9.35 × 6 =
  10. 10.26 × 65 =
  11. 11.15 × 24 =
  12. 12.16 × 35 =
  13. 13.65 × 18 =
  14. 14.15 × 22 =
  15. 15.55 × 28 =
  16. 16.25 × 8 =
  17. 17.65 × 22 =
  18. 18.14 × 35 =
  19. 19.6 × 35 =
  20. 20.15 × 26 =
  21. 21.22 × 75 =
  22. 22.45 × 26 =
  23. 23.65 × 10 =
  24. 24.36 × 15 =
  25. 25.35 × 28 =
  26. 26.65 × 8 =
  27. 27.55 × 16 =
  28. 28.40 × 75 =
  29. 29.38 × 25 =
  30. 30.10 × 45 =
  31. 31.28 × 75 =
  32. 32.125 × 28 =
  33. 33.8 × 45 =
  34. 34.28 × 25 =
  35. 35.15 × 28 =
  36. 36.65 × 36 =
  37. 37.14 × 65 =
  38. 38.28 × 125 =
  39. 39.55 × 38 =
  40. 40.125 × 20 =

Answer key

  1. 1000
  2. 900
  3. 1250
  4. 250
  5. 1950
  6. 1040
  7. 4500
  8. 1870
  9. 210
  10. 1690
  11. 360
  12. 560
  13. 1170
  14. 330
  15. 1540
  16. 200
  17. 1430
  18. 490
  19. 210
  20. 390
  21. 1650
  22. 1170
  23. 650
  24. 540
  25. 980
  26. 520
  27. 880
  28. 3000
  29. 950
  30. 450
  31. 2100
  32. 3500
  33. 360
  34. 700
  35. 420
  36. 2340
  37. 910
  38. 3500
  39. 2090
  40. 2500

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