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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 933 · 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 × 75 =
  2. 2.6 × 15 =
  3. 3.18 × 75 =
  4. 4.36 × 15 =
  5. 5.14 × 25 =
  6. 6.6 × 45 =
  7. 7.125 × 20 =
  8. 8.30 × 35 =
  9. 9.65 × 6 =
  10. 10.65 × 26 =
  11. 11.34 × 25 =
  12. 12.65 × 6 =
  13. 13.40 × 15 =
  14. 14.12 × 15 =
  15. 15.36 × 65 =
  16. 16.36 × 75 =
  17. 17.10 × 75 =
  18. 18.28 × 65 =
  19. 19.15 × 28 =
  20. 20.10 × 125 =
  21. 21.22 × 125 =
  22. 22.75 × 20 =
  23. 23.36 × 15 =
  24. 24.6 × 25 =
  25. 25.24 × 125 =
  26. 26.16 × 125 =
  27. 27.38 × 45 =
  28. 28.55 × 10 =
  29. 29.65 × 36 =
  30. 30.28 × 25 =
  31. 31.65 × 8 =
  32. 32.35 × 10 =
  33. 33.65 × 32 =
  34. 34.55 × 24 =
  35. 35.45 × 34 =
  36. 36.18 × 45 =
  37. 37.25 × 10 =
  38. 38.65 × 36 =
  39. 39.15 × 34 =
  40. 40.36 × 65 =

Answer key

  1. 900
  2. 90
  3. 1350
  4. 540
  5. 350
  6. 270
  7. 2500
  8. 1050
  9. 390
  10. 1690
  11. 850
  12. 390
  13. 600
  14. 180
  15. 2340
  16. 2700
  17. 750
  18. 1820
  19. 420
  20. 1250
  21. 2750
  22. 1500
  23. 540
  24. 150
  25. 3000
  26. 2000
  27. 1710
  28. 550
  29. 2340
  30. 700
  31. 520
  32. 350
  33. 2080
  34. 1320
  35. 1530
  36. 810
  37. 250
  38. 2340
  39. 510
  40. 2340

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