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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 191 · 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. 1.16 × 35 =
  2. 2.35 × 40 =
  3. 3.55 × 34 =
  4. 4.10 × 65 =
  5. 5.55 × 8 =
  6. 6.25 × 20 =
  7. 7.16 × 65 =
  8. 8.12 × 65 =
  9. 9.35 × 12 =
  10. 10.15 × 26 =
  11. 11.25 × 26 =
  12. 12.35 × 6 =
  13. 13.10 × 25 =
  14. 14.14 × 65 =
  15. 15.55 × 12 =
  16. 16.10 × 25 =
  17. 17.15 × 8 =
  18. 18.36 × 15 =
  19. 19.55 × 8 =
  20. 20.75 × 34 =
  21. 21.65 × 38 =
  22. 22.6 × 25 =
  23. 23.35 × 10 =
  24. 24.125 × 28 =
  25. 25.8 × 35 =
  26. 26.45 × 10 =
  27. 27.38 × 35 =
  28. 28.34 × 65 =
  29. 29.16 × 15 =
  30. 30.16 × 125 =
  31. 31.25 × 34 =
  32. 32.15 × 32 =
  33. 33.30 × 65 =
  34. 34.35 × 14 =
  35. 35.10 × 25 =
  36. 36.16 × 65 =
  37. 37.28 × 25 =
  38. 38.65 × 40 =
  39. 39.15 × 10 =
  40. 40.25 × 34 =

Answer key

  1. 560
  2. 1400
  3. 1870
  4. 650
  5. 440
  6. 500
  7. 1040
  8. 780
  9. 420
  10. 390
  11. 650
  12. 210
  13. 250
  14. 910
  15. 660
  16. 250
  17. 120
  18. 540
  19. 440
  20. 2550
  21. 2470
  22. 150
  23. 350
  24. 3500
  25. 280
  26. 450
  27. 1330
  28. 2210
  29. 240
  30. 2000
  31. 850
  32. 480
  33. 1950
  34. 490
  35. 250
  36. 1040
  37. 700
  38. 2600
  39. 150
  40. 850

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