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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 319 · 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. 1.55 × 28 =
  2. 2.16 × 65 =
  3. 3.10 × 25 =
  4. 4.65 × 22 =
  5. 5.25 × 20 =
  6. 6.8 × 25 =
  7. 7.75 × 40 =
  8. 8.30 × 55 =
  9. 9.35 × 32 =
  10. 10.12 × 35 =
  11. 11.15 × 14 =
  12. 12.18 × 25 =
  13. 13.75 × 38 =
  14. 14.45 × 12 =
  15. 15.75 × 28 =
  16. 16.30 × 35 =
  17. 17.25 × 40 =
  18. 18.12 × 125 =
  19. 19.14 × 55 =
  20. 20.15 × 34 =
  21. 21.125 × 32 =
  22. 22.65 × 22 =
  23. 23.65 × 40 =
  24. 24.25 × 26 =
  25. 25.35 × 6 =
  26. 26.75 × 34 =
  27. 27.35 × 8 =
  28. 28.30 × 25 =
  29. 29.35 × 32 =
  30. 30.8 × 55 =
  31. 31.125 × 6 =
  32. 32.14 × 75 =
  33. 33.65 × 10 =
  34. 34.28 × 25 =
  35. 35.35 × 16 =
  36. 36.125 × 8 =
  37. 37.16 × 15 =
  38. 38.65 × 10 =
  39. 39.8 × 15 =
  40. 40.12 × 125 =

Answer key

  1. 1540
  2. 1040
  3. 250
  4. 1430
  5. 500
  6. 200
  7. 3000
  8. 1650
  9. 1120
  10. 420
  11. 210
  12. 450
  13. 2850
  14. 540
  15. 2100
  16. 1050
  17. 1000
  18. 1500
  19. 770
  20. 510
  21. 4000
  22. 1430
  23. 2600
  24. 650
  25. 210
  26. 2550
  27. 280
  28. 750
  29. 1120
  30. 440
  31. 750
  32. 1050
  33. 650
  34. 700
  35. 560
  36. 1000
  37. 240
  38. 650
  39. 120
  40. 1500

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