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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 526 · 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. 1.35 × 6 =
  2. 2.25 × 30 =
  3. 3.18 × 65 =
  4. 4.26 × 25 =
  5. 5.45 × 12 =
  6. 6.25 × 36 =
  7. 7.75 × 12 =
  8. 8.6 × 75 =
  9. 9.15 × 40 =
  10. 10.65 × 10 =
  11. 11.15 × 18 =
  12. 12.32 × 75 =
  13. 13.45 × 28 =
  14. 14.45 × 22 =
  15. 15.28 × 25 =
  16. 16.16 × 15 =
  17. 17.75 × 32 =
  18. 18.65 × 38 =
  19. 19.25 × 6 =
  20. 20.15 × 40 =
  21. 21.35 × 24 =
  22. 22.36 × 65 =
  23. 23.6 × 45 =
  24. 24.14 × 55 =
  25. 25.45 × 14 =
  26. 26.24 × 75 =
  27. 27.45 × 10 =
  28. 28.32 × 125 =
  29. 29.24 × 55 =
  30. 30.75 × 18 =
  31. 31.40 × 65 =
  32. 32.20 × 75 =
  33. 33.15 × 20 =
  34. 34.20 × 55 =
  35. 35.38 × 25 =
  36. 36.35 × 28 =
  37. 37.16 × 75 =
  38. 38.75 × 30 =
  39. 39.35 × 40 =
  40. 40.35 × 34 =

Answer key

  1. 210
  2. 750
  3. 1170
  4. 650
  5. 540
  6. 900
  7. 900
  8. 450
  9. 600
  10. 650
  11. 270
  12. 2400
  13. 1260
  14. 990
  15. 700
  16. 240
  17. 2400
  18. 2470
  19. 150
  20. 600
  21. 840
  22. 2340
  23. 270
  24. 770
  25. 630
  26. 1800
  27. 450
  28. 4000
  29. 1320
  30. 1350
  31. 2600
  32. 1500
  33. 300
  34. 1100
  35. 950
  36. 980
  37. 1200
  38. 2250
  39. 1400
  40. 1190

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