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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 432 · 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. 1.35 × 40 =
  2. 2.38 × 35 =
  3. 3.15 × 8 =
  4. 4.25 × 18 =
  5. 5.40 × 55 =
  6. 6.38 × 15 =
  7. 7.14 × 125 =
  8. 8.16 × 35 =
  9. 9.45 × 30 =
  10. 10.75 × 12 =
  11. 11.55 × 30 =
  12. 12.35 × 32 =
  13. 13.55 × 38 =
  14. 14.16 × 55 =
  15. 15.75 × 16 =
  16. 16.75 × 18 =
  17. 17.25 × 32 =
  18. 18.45 × 36 =
  19. 19.20 × 25 =
  20. 20.45 × 6 =
  21. 21.15 × 10 =
  22. 22.30 × 35 =
  23. 23.15 × 24 =
  24. 24.125 × 28 =
  25. 25.6 × 55 =
  26. 26.125 × 36 =
  27. 27.38 × 35 =
  28. 28.26 × 35 =
  29. 29.65 × 26 =
  30. 30.10 × 25 =
  31. 31.45 × 40 =
  32. 32.24 × 35 =
  33. 33.75 × 40 =
  34. 34.36 × 35 =
  35. 35.65 × 28 =
  36. 36.35 × 32 =
  37. 37.38 × 55 =
  38. 38.65 × 16 =
  39. 39.8 × 35 =
  40. 40.40 × 125 =

Answer key

  1. 1400
  2. 1330
  3. 120
  4. 450
  5. 2200
  6. 570
  7. 1750
  8. 560
  9. 1350
  10. 900
  11. 1650
  12. 1120
  13. 2090
  14. 880
  15. 1200
  16. 1350
  17. 800
  18. 1620
  19. 500
  20. 270
  21. 150
  22. 1050
  23. 360
  24. 3500
  25. 330
  26. 4500
  27. 1330
  28. 910
  29. 1690
  30. 250
  31. 1800
  32. 840
  33. 3000
  34. 1260
  35. 1820
  36. 1120
  37. 2090
  38. 1040
  39. 280
  40. 5000

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