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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 464 · 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. 1.12 × 35 =
  2. 2.6 × 25 =
  3. 3.75 × 10 =
  4. 4.15 × 32 =
  5. 5.18 × 15 =
  6. 6.75 × 28 =
  7. 7.34 × 25 =
  8. 8.15 × 38 =
  9. 9.12 × 25 =
  10. 10.20 × 45 =
  11. 11.45 × 30 =
  12. 12.65 × 26 =
  13. 13.55 × 28 =
  14. 14.45 × 22 =
  15. 15.36 × 25 =
  16. 16.12 × 15 =
  17. 17.35 × 8 =
  18. 18.10 × 45 =
  19. 19.25 × 28 =
  20. 20.15 × 22 =
  21. 21.36 × 75 =
  22. 22.55 × 24 =
  23. 23.15 × 30 =
  24. 24.40 × 15 =
  25. 25.36 × 55 =
  26. 26.125 × 10 =
  27. 27.10 × 25 =
  28. 28.25 × 8 =
  29. 29.75 × 28 =
  30. 30.6 × 75 =
  31. 31.15 × 36 =
  32. 32.125 × 28 =
  33. 33.24 × 55 =
  34. 34.65 × 14 =
  35. 35.15 × 20 =
  36. 36.6 × 35 =
  37. 37.14 × 65 =
  38. 38.8 × 35 =
  39. 39.125 × 18 =
  40. 40.45 × 34 =

Answer key

  1. 420
  2. 150
  3. 750
  4. 480
  5. 270
  6. 2100
  7. 850
  8. 570
  9. 300
  10. 900
  11. 1350
  12. 1690
  13. 1540
  14. 990
  15. 900
  16. 180
  17. 280
  18. 450
  19. 700
  20. 330
  21. 2700
  22. 1320
  23. 450
  24. 600
  25. 1980
  26. 1250
  27. 250
  28. 200
  29. 2100
  30. 450
  31. 540
  32. 3500
  33. 1320
  34. 910
  35. 300
  36. 210
  37. 910
  38. 280
  39. 2250
  40. 1530

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