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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 837 · 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 × 20 =
  2. 2.75 × 14 =
  3. 3.24 × 35 =
  4. 4.25 × 6 =
  5. 5.28 × 55 =
  6. 6.15 × 36 =
  7. 7.12 × 35 =
  8. 8.12 × 125 =
  9. 9.10 × 25 =
  10. 10.25 × 18 =
  11. 11.25 × 16 =
  12. 12.8 × 75 =
  13. 13.75 × 20 =
  14. 14.26 × 75 =
  15. 15.35 × 40 =
  16. 16.125 × 10 =
  17. 17.65 × 8 =
  18. 18.65 × 10 =
  19. 19.35 × 14 =
  20. 20.34 × 25 =
  21. 21.10 × 25 =
  22. 22.16 × 125 =
  23. 23.10 × 65 =
  24. 24.35 × 12 =
  25. 25.34 × 55 =
  26. 26.55 × 20 =
  27. 27.14 × 55 =
  28. 28.75 × 38 =
  29. 29.28 × 125 =
  30. 30.34 × 45 =
  31. 31.36 × 35 =
  32. 32.12 × 75 =
  33. 33.28 × 35 =
  34. 34.25 × 18 =
  35. 35.65 × 24 =
  36. 36.15 × 16 =
  37. 37.6 × 45 =
  38. 38.35 × 26 =
  39. 39.15 × 8 =
  40. 40.22 × 65 =

Answer key

  1. 1500
  2. 1050
  3. 840
  4. 150
  5. 1540
  6. 540
  7. 420
  8. 1500
  9. 250
  10. 450
  11. 400
  12. 600
  13. 1500
  14. 1950
  15. 1400
  16. 1250
  17. 520
  18. 650
  19. 490
  20. 850
  21. 250
  22. 2000
  23. 650
  24. 420
  25. 1870
  26. 1100
  27. 770
  28. 2850
  29. 3500
  30. 1530
  31. 1260
  32. 900
  33. 980
  34. 450
  35. 1560
  36. 240
  37. 270
  38. 910
  39. 120
  40. 1430

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