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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 578 · 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. 1.28 × 65 =
  2. 2.65 × 6 =
  3. 3.25 × 40 =
  4. 4.8 × 55 =
  5. 5.75 × 18 =
  6. 6.15 × 30 =
  7. 7.28 × 65 =
  8. 8.125 × 10 =
  9. 9.125 × 32 =
  10. 10.25 × 26 =
  11. 11.6 × 15 =
  12. 12.125 × 18 =
  13. 13.75 × 28 =
  14. 14.65 × 10 =
  15. 15.14 × 45 =
  16. 16.75 × 16 =
  17. 17.45 × 34 =
  18. 18.25 × 18 =
  19. 19.18 × 45 =
  20. 20.35 × 34 =
  21. 21.8 × 65 =
  22. 22.15 × 10 =
  23. 23.35 × 6 =
  24. 24.26 × 25 =
  25. 25.125 × 12 =
  26. 26.34 × 35 =
  27. 27.15 × 14 =
  28. 28.75 × 26 =
  29. 29.24 × 55 =
  30. 30.35 × 14 =
  31. 31.10 × 45 =
  32. 32.45 × 28 =
  33. 33.125 × 8 =
  34. 34.65 × 26 =
  35. 35.34 × 125 =
  36. 36.65 × 20 =
  37. 37.65 × 40 =
  38. 38.25 × 30 =
  39. 39.26 × 15 =
  40. 40.55 × 8 =

Answer key

  1. 1820
  2. 390
  3. 1000
  4. 440
  5. 1350
  6. 450
  7. 1820
  8. 1250
  9. 4000
  10. 650
  11. 90
  12. 2250
  13. 2100
  14. 650
  15. 630
  16. 1200
  17. 1530
  18. 450
  19. 810
  20. 1190
  21. 520
  22. 150
  23. 210
  24. 650
  25. 1500
  26. 1190
  27. 210
  28. 1950
  29. 1320
  30. 490
  31. 450
  32. 1260
  33. 1000
  34. 1690
  35. 4250
  36. 1300
  37. 2600
  38. 750
  39. 390
  40. 440

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