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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 537 · 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 × 55 =
  2. 2.16 × 65 =
  3. 3.55 × 18 =
  4. 4.8 × 15 =
  5. 5.75 × 8 =
  6. 6.20 × 25 =
  7. 7.14 × 45 =
  8. 8.25 × 8 =
  9. 9.15 × 6 =
  10. 10.28 × 25 =
  11. 11.36 × 45 =
  12. 12.38 × 75 =
  13. 13.14 × 35 =
  14. 14.45 × 26 =
  15. 15.25 × 10 =
  16. 16.15 × 8 =
  17. 17.38 × 75 =
  18. 18.20 × 25 =
  19. 19.6 × 25 =
  20. 20.22 × 45 =
  21. 21.14 × 75 =
  22. 22.65 × 38 =
  23. 23.35 × 36 =
  24. 24.45 × 16 =
  25. 25.12 × 35 =
  26. 26.38 × 75 =
  27. 27.35 × 30 =
  28. 28.125 × 8 =
  29. 29.65 × 28 =
  30. 30.45 × 34 =
  31. 31.55 × 24 =
  32. 32.16 × 35 =
  33. 33.65 × 18 =
  34. 34.10 × 125 =
  35. 35.55 × 34 =
  36. 36.55 × 24 =
  37. 37.45 × 18 =
  38. 38.15 × 38 =
  39. 39.75 × 8 =
  40. 40.10 × 55 =

Answer key

  1. 2200
  2. 1040
  3. 990
  4. 120
  5. 600
  6. 500
  7. 630
  8. 200
  9. 90
  10. 700
  11. 1620
  12. 2850
  13. 490
  14. 1170
  15. 250
  16. 120
  17. 2850
  18. 500
  19. 150
  20. 990
  21. 1050
  22. 2470
  23. 1260
  24. 720
  25. 420
  26. 2850
  27. 1050
  28. 1000
  29. 1820
  30. 1530
  31. 1320
  32. 560
  33. 1170
  34. 1250
  35. 1870
  36. 1320
  37. 810
  38. 570
  39. 600
  40. 550

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