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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 976 · 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. 1.45 × 18 =
  2. 2.75 × 12 =
  3. 3.26 × 45 =
  4. 4.75 × 34 =
  5. 5.32 × 25 =
  6. 6.45 × 8 =
  7. 7.10 × 25 =
  8. 8.6 × 35 =
  9. 9.35 × 20 =
  10. 10.38 × 55 =
  11. 11.40 × 35 =
  12. 12.6 × 15 =
  13. 13.65 × 8 =
  14. 14.65 × 14 =
  15. 15.32 × 75 =
  16. 16.25 × 18 =
  17. 17.16 × 25 =
  18. 18.30 × 125 =
  19. 19.24 × 55 =
  20. 20.75 × 26 =
  21. 21.25 × 40 =
  22. 22.10 × 35 =
  23. 23.15 × 16 =
  24. 24.20 × 75 =
  25. 25.40 × 125 =
  26. 26.40 × 25 =
  27. 27.35 × 24 =
  28. 28.35 × 36 =
  29. 29.25 × 24 =
  30. 30.45 × 18 =
  31. 31.16 × 45 =
  32. 32.6 × 35 =
  33. 33.25 × 34 =
  34. 34.125 × 40 =
  35. 35.30 × 125 =
  36. 36.36 × 35 =
  37. 37.34 × 125 =
  38. 38.6 × 75 =
  39. 39.15 × 34 =
  40. 40.20 × 15 =

Answer key

  1. 810
  2. 900
  3. 1170
  4. 2550
  5. 800
  6. 360
  7. 250
  8. 210
  9. 700
  10. 2090
  11. 1400
  12. 90
  13. 520
  14. 910
  15. 2400
  16. 450
  17. 400
  18. 3750
  19. 1320
  20. 1950
  21. 1000
  22. 350
  23. 240
  24. 1500
  25. 5000
  26. 1000
  27. 840
  28. 1260
  29. 600
  30. 810
  31. 720
  32. 210
  33. 850
  34. 5000
  35. 3750
  36. 1260
  37. 4250
  38. 450
  39. 510
  40. 300

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