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Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 192 · 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. 1.75 × 38 =
  2. 2.125 × 18 =
  3. 3.36 × 75 =
  4. 4.20 × 55 =
  5. 5.18 × 55 =
  6. 6.25 × 24 =
  7. 7.15 × 30 =
  8. 8.65 × 8 =
  9. 9.75 × 34 =
  10. 10.24 × 55 =
  11. 11.75 × 12 =
  12. 12.65 × 22 =
  13. 13.10 × 65 =
  14. 14.32 × 75 =
  15. 15.35 × 40 =
  16. 16.30 × 15 =
  17. 17.36 × 55 =
  18. 18.16 × 125 =
  19. 19.20 × 15 =
  20. 20.125 × 38 =
  21. 21.15 × 34 =
  22. 22.45 × 14 =
  23. 23.26 × 15 =
  24. 24.34 × 25 =
  25. 25.32 × 15 =
  26. 26.15 × 6 =
  27. 27.55 × 40 =
  28. 28.16 × 15 =
  29. 29.10 × 15 =
  30. 30.125 × 36 =
  31. 31.34 × 15 =
  32. 32.125 × 30 =
  33. 33.6 × 55 =
  34. 34.25 × 30 =
  35. 35.15 × 6 =
  36. 36.15 × 28 =
  37. 37.35 × 14 =
  38. 38.18 × 45 =
  39. 39.25 × 12 =
  40. 40.25 × 20 =

Answer key

  1. 2850
  2. 2250
  3. 2700
  4. 1100
  5. 990
  6. 600
  7. 450
  8. 520
  9. 2550
  10. 1320
  11. 900
  12. 1430
  13. 650
  14. 2400
  15. 1400
  16. 450
  17. 1980
  18. 2000
  19. 300
  20. 4750
  21. 510
  22. 630
  23. 390
  24. 850
  25. 480
  26. 90
  27. 2200
  28. 240
  29. 150
  30. 4500
  31. 510
  32. 3750
  33. 330
  34. 750
  35. 90
  36. 420
  37. 490
  38. 810
  39. 300
  40. 500

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