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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 767 · 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. 1.8 × 125 =
  2. 2.65 × 6 =
  3. 3.15 × 24 =
  4. 4.125 × 30 =
  5. 5.34 × 65 =
  6. 6.45 × 36 =
  7. 7.55 × 16 =
  8. 8.55 × 40 =
  9. 9.12 × 65 =
  10. 10.55 × 12 =
  11. 11.75 × 8 =
  12. 12.14 × 25 =
  13. 13.22 × 15 =
  14. 14.35 × 40 =
  15. 15.10 × 65 =
  16. 16.28 × 15 =
  17. 17.22 × 75 =
  18. 18.30 × 75 =
  19. 19.32 × 35 =
  20. 20.18 × 15 =
  21. 21.15 × 34 =
  22. 22.65 × 16 =
  23. 23.15 × 20 =
  24. 24.40 × 25 =
  25. 25.65 × 34 =
  26. 26.125 × 40 =
  27. 27.75 × 8 =
  28. 28.55 × 18 =
  29. 29.65 × 6 =
  30. 30.28 × 75 =
  31. 31.35 × 24 =
  32. 32.65 × 38 =
  33. 33.35 × 28 =
  34. 34.25 × 6 =
  35. 35.30 × 15 =
  36. 36.14 × 15 =
  37. 37.32 × 75 =
  38. 38.15 × 30 =
  39. 39.75 × 12 =
  40. 40.25 × 10 =

Answer key

  1. 1000
  2. 390
  3. 360
  4. 3750
  5. 2210
  6. 1620
  7. 880
  8. 2200
  9. 780
  10. 660
  11. 600
  12. 350
  13. 330
  14. 1400
  15. 650
  16. 420
  17. 1650
  18. 2250
  19. 1120
  20. 270
  21. 510
  22. 1040
  23. 300
  24. 1000
  25. 2210
  26. 5000
  27. 600
  28. 990
  29. 390
  30. 2100
  31. 840
  32. 2470
  33. 980
  34. 150
  35. 450
  36. 210
  37. 2400
  38. 450
  39. 900
  40. 250

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