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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 202 · 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 × 28 =
  2. 2.40 × 55 =
  3. 3.12 × 35 =
  4. 4.25 × 6 =
  5. 5.25 × 36 =
  6. 6.55 × 26 =
  7. 7.8 × 75 =
  8. 8.12 × 75 =
  9. 9.24 × 55 =
  10. 10.12 × 75 =
  11. 11.40 × 15 =
  12. 12.35 × 8 =
  13. 13.12 × 45 =
  14. 14.15 × 22 =
  15. 15.55 × 8 =
  16. 16.35 × 6 =
  17. 17.15 × 24 =
  18. 18.10 × 45 =
  19. 19.14 × 55 =
  20. 20.65 × 34 =
  21. 21.55 × 10 =
  22. 22.35 × 6 =
  23. 23.24 × 75 =
  24. 24.20 × 125 =
  25. 25.75 × 22 =
  26. 26.55 × 10 =
  27. 27.10 × 55 =
  28. 28.35 × 24 =
  29. 29.35 × 28 =
  30. 30.26 × 45 =
  31. 31.12 × 75 =
  32. 32.15 × 24 =
  33. 33.38 × 75 =
  34. 34.55 × 14 =
  35. 35.26 × 125 =
  36. 36.125 × 26 =
  37. 37.40 × 65 =
  38. 38.35 × 28 =
  39. 39.36 × 25 =
  40. 40.65 × 22 =

Answer key

  1. 980
  2. 2200
  3. 420
  4. 150
  5. 900
  6. 1430
  7. 600
  8. 900
  9. 1320
  10. 900
  11. 600
  12. 280
  13. 540
  14. 330
  15. 440
  16. 210
  17. 360
  18. 450
  19. 770
  20. 2210
  21. 550
  22. 210
  23. 1800
  24. 2500
  25. 1650
  26. 550
  27. 550
  28. 840
  29. 980
  30. 1170
  31. 900
  32. 360
  33. 2850
  34. 770
  35. 3250
  36. 3250
  37. 2600
  38. 980
  39. 900
  40. 1430

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