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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 37 · 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 × 24 =
  2. 2.125 × 40 =
  3. 3.45 × 36 =
  4. 4.45 × 28 =
  5. 5.8 × 45 =
  6. 6.125 × 40 =
  7. 7.35 × 24 =
  8. 8.28 × 35 =
  9. 9.125 × 24 =
  10. 10.45 × 24 =
  11. 11.8 × 55 =
  12. 12.65 × 6 =
  13. 13.15 × 32 =
  14. 14.30 × 45 =
  15. 15.125 × 8 =
  16. 16.65 × 6 =
  17. 17.24 × 65 =
  18. 18.34 × 75 =
  19. 19.125 × 40 =
  20. 20.38 × 125 =
  21. 21.6 × 75 =
  22. 22.35 × 14 =
  23. 23.45 × 10 =
  24. 24.55 × 10 =
  25. 25.28 × 15 =
  26. 26.6 × 125 =
  27. 27.28 × 55 =
  28. 28.35 × 32 =
  29. 29.14 × 125 =
  30. 30.75 × 34 =
  31. 31.125 × 26 =
  32. 32.55 × 8 =
  33. 33.55 × 20 =
  34. 34.38 × 45 =
  35. 35.36 × 15 =
  36. 36.16 × 125 =
  37. 37.8 × 25 =
  38. 38.12 × 65 =
  39. 39.8 × 35 =
  40. 40.24 × 25 =

Answer key

  1. 1320
  2. 5000
  3. 1620
  4. 1260
  5. 360
  6. 5000
  7. 840
  8. 980
  9. 3000
  10. 1080
  11. 440
  12. 390
  13. 480
  14. 1350
  15. 1000
  16. 390
  17. 1560
  18. 2550
  19. 5000
  20. 4750
  21. 450
  22. 490
  23. 450
  24. 550
  25. 420
  26. 750
  27. 1540
  28. 1120
  29. 1750
  30. 2550
  31. 3250
  32. 440
  33. 1100
  34. 1710
  35. 540
  36. 2000
  37. 200
  38. 780
  39. 280
  40. 600

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