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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 546 · 40 questions
TalentJR

The fast method (Halve first): Halve the number. × 5: multiply the half by 10. × 50: multiply the half by 100. Odd number? Its half ends in .5 — 43 → 21.5 — and × 10 moves the point: 215.

NameDateTime takenScore ___ / 40
  1. 1.14 × 5 =
  2. 2.76 × 50 =
  3. 3.37 × 50 =
  4. 4.40 × 50 =
  5. 5.44 × 5 =
  6. 6.80 × 5 =
  7. 7.87 × 50 =
  8. 8.67 × 50 =
  9. 9.81 × 50 =
  10. 10.36 × 50 =
  11. 11.81 × 5 =
  12. 12.19 × 50 =
  13. 13.65 × 5 =
  14. 14.78 × 5 =
  15. 15.98 × 5 =
  16. 16.32 × 5 =
  17. 17.30 × 5 =
  18. 18.73 × 50 =
  19. 19.51 × 5 =
  20. 20.86 × 50 =
  21. 21.63 × 5 =
  22. 22.77 × 50 =
  23. 23.94 × 50 =
  24. 24.62 × 5 =
  25. 25.55 × 50 =
  26. 26.13 × 5 =
  27. 27.76 × 5 =
  28. 28.62 × 50 =
  29. 29.48 × 50 =
  30. 30.89 × 50 =
  31. 31.47 × 50 =
  32. 32.62 × 50 =
  33. 33.48 × 5 =
  34. 34.71 × 5 =
  35. 35.25 × 5 =
  36. 36.30 × 5 =
  37. 37.79 × 5 =
  38. 38.56 × 5 =
  39. 39.31 × 5 =
  40. 40.43 × 50 =

Answer key

  1. 70
  2. 3800
  3. 1850
  4. 2000
  5. 220
  6. 400
  7. 4350
  8. 3350
  9. 4050
  10. 1800
  11. 405
  12. 950
  13. 325
  14. 390
  15. 490
  16. 160
  17. 150
  18. 3650
  19. 255
  20. 4300
  21. 315
  22. 3850
  23. 4700
  24. 310
  25. 2750
  26. 65
  27. 380
  28. 3100
  29. 2400
  30. 4450
  31. 2350
  32. 3100
  33. 240
  34. 355
  35. 125
  36. 150
  37. 395
  38. 280
  39. 155
  40. 2150

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