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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 968 · 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. 1.55 × 8 =
  2. 2.35 × 22 =
  3. 3.125 × 8 =
  4. 4.24 × 125 =
  5. 5.20 × 45 =
  6. 6.15 × 36 =
  7. 7.25 × 20 =
  8. 8.25 × 12 =
  9. 9.24 × 125 =
  10. 10.36 × 45 =
  11. 11.24 × 35 =
  12. 12.125 × 32 =
  13. 13.15 × 26 =
  14. 14.18 × 45 =
  15. 15.55 × 10 =
  16. 16.65 × 40 =
  17. 17.35 × 16 =
  18. 18.14 × 45 =
  19. 19.12 × 25 =
  20. 20.35 × 20 =
  21. 21.36 × 15 =
  22. 22.35 × 36 =
  23. 23.65 × 40 =
  24. 24.12 × 25 =
  25. 25.24 × 125 =
  26. 26.65 × 28 =
  27. 27.34 × 125 =
  28. 28.125 × 20 =
  29. 29.36 × 45 =
  30. 30.40 × 75 =
  31. 31.34 × 25 =
  32. 32.25 × 14 =
  33. 33.125 × 20 =
  34. 34.65 × 34 =
  35. 35.125 × 10 =
  36. 36.14 × 25 =
  37. 37.12 × 75 =
  38. 38.34 × 65 =
  39. 39.20 × 45 =
  40. 40.22 × 65 =

Answer key

  1. 440
  2. 770
  3. 1000
  4. 3000
  5. 900
  6. 540
  7. 500
  8. 300
  9. 3000
  10. 1620
  11. 840
  12. 4000
  13. 390
  14. 810
  15. 550
  16. 2600
  17. 560
  18. 630
  19. 300
  20. 700
  21. 540
  22. 1260
  23. 2600
  24. 300
  25. 3000
  26. 1820
  27. 4250
  28. 2500
  29. 1620
  30. 3000
  31. 850
  32. 350
  33. 2500
  34. 2210
  35. 1250
  36. 350
  37. 900
  38. 2210
  39. 900
  40. 1430

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