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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 879 · 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. 1.32 × 15 =
  2. 2.45 × 14 =
  3. 3.65 × 32 =
  4. 4.20 × 125 =
  5. 5.6 × 65 =
  6. 6.36 × 15 =
  7. 7.14 × 55 =
  8. 8.32 × 35 =
  9. 9.16 × 125 =
  10. 10.65 × 10 =
  11. 11.45 × 12 =
  12. 12.65 × 10 =
  13. 13.32 × 25 =
  14. 14.30 × 35 =
  15. 15.12 × 125 =
  16. 16.45 × 36 =
  17. 17.35 × 22 =
  18. 18.40 × 125 =
  19. 19.6 × 15 =
  20. 20.12 × 75 =
  21. 21.55 × 38 =
  22. 22.45 × 10 =
  23. 23.6 × 65 =
  24. 24.12 × 55 =
  25. 25.34 × 75 =
  26. 26.22 × 35 =
  27. 27.125 × 8 =
  28. 28.26 × 125 =
  29. 29.25 × 10 =
  30. 30.30 × 15 =
  31. 31.65 × 12 =
  32. 32.25 × 30 =
  33. 33.12 × 15 =
  34. 34.45 × 22 =
  35. 35.26 × 55 =
  36. 36.65 × 28 =
  37. 37.125 × 30 =
  38. 38.55 × 12 =
  39. 39.30 × 25 =
  40. 40.75 × 40 =

Answer key

  1. 480
  2. 630
  3. 2080
  4. 2500
  5. 390
  6. 540
  7. 770
  8. 1120
  9. 2000
  10. 650
  11. 540
  12. 650
  13. 800
  14. 1050
  15. 1500
  16. 1620
  17. 770
  18. 5000
  19. 90
  20. 900
  21. 2090
  22. 450
  23. 390
  24. 660
  25. 2550
  26. 770
  27. 1000
  28. 3250
  29. 250
  30. 450
  31. 780
  32. 750
  33. 180
  34. 990
  35. 1430
  36. 1820
  37. 3750
  38. 660
  39. 750
  40. 3000

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