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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 102 · 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. 1.36 × 15 =
  2. 2.65 × 22 =
  3. 3.45 × 26 =
  4. 4.25 × 14 =
  5. 5.25 × 38 =
  6. 6.14 × 75 =
  7. 7.10 × 35 =
  8. 8.55 × 30 =
  9. 9.35 × 16 =
  10. 10.36 × 65 =
  11. 11.125 × 18 =
  12. 12.75 × 40 =
  13. 13.35 × 34 =
  14. 14.55 × 38 =
  15. 15.36 × 45 =
  16. 16.25 × 8 =
  17. 17.30 × 125 =
  18. 18.15 × 16 =
  19. 19.15 × 20 =
  20. 20.55 × 8 =
  21. 21.38 × 75 =
  22. 22.40 × 125 =
  23. 23.125 × 6 =
  24. 24.10 × 125 =
  25. 25.35 × 18 =
  26. 26.34 × 65 =
  27. 27.125 × 16 =
  28. 28.45 × 34 =
  29. 29.65 × 14 =
  30. 30.55 × 28 =
  31. 31.40 × 35 =
  32. 32.14 × 125 =
  33. 33.125 × 30 =
  34. 34.34 × 15 =
  35. 35.36 × 55 =
  36. 36.24 × 55 =
  37. 37.22 × 55 =
  38. 38.65 × 12 =
  39. 39.55 × 32 =
  40. 40.38 × 45 =

Answer key

  1. 540
  2. 1430
  3. 1170
  4. 350
  5. 950
  6. 1050
  7. 350
  8. 1650
  9. 560
  10. 2340
  11. 2250
  12. 3000
  13. 1190
  14. 2090
  15. 1620
  16. 200
  17. 3750
  18. 240
  19. 300
  20. 440
  21. 2850
  22. 5000
  23. 750
  24. 1250
  25. 630
  26. 2210
  27. 2000
  28. 1530
  29. 910
  30. 1540
  31. 1400
  32. 1750
  33. 3750
  34. 510
  35. 1980
  36. 1320
  37. 1210
  38. 780
  39. 1760
  40. 1710

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