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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 149 · 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. 1.68 × 5 =
  2. 2.67 × 5 =
  3. 3.33 × 5 =
  4. 4.60 × 50 =
  5. 5.89 × 50 =
  6. 6.47 × 5 =
  7. 7.36 × 50 =
  8. 8.79 × 5 =
  9. 9.84 × 50 =
  10. 10.75 × 50 =
  11. 11.51 × 5 =
  12. 12.75 × 5 =
  13. 13.90 × 50 =
  14. 14.77 × 5 =
  15. 15.69 × 5 =
  16. 16.12 × 50 =
  17. 17.59 × 5 =
  18. 18.75 × 5 =
  19. 19.40 × 50 =
  20. 20.66 × 50 =
  21. 21.54 × 50 =
  22. 22.73 × 50 =
  23. 23.33 × 5 =
  24. 24.59 × 50 =
  25. 25.19 × 5 =
  26. 26.79 × 5 =
  27. 27.65 × 5 =
  28. 28.60 × 5 =
  29. 29.42 × 5 =
  30. 30.93 × 50 =
  31. 31.83 × 5 =
  32. 32.86 × 50 =
  33. 33.27 × 5 =
  34. 34.41 × 50 =
  35. 35.62 × 50 =
  36. 36.47 × 50 =
  37. 37.31 × 50 =
  38. 38.13 × 5 =
  39. 39.54 × 5 =
  40. 40.25 × 5 =

Answer key

  1. 340
  2. 335
  3. 165
  4. 3000
  5. 4450
  6. 235
  7. 1800
  8. 395
  9. 4200
  10. 3750
  11. 255
  12. 375
  13. 4500
  14. 385
  15. 345
  16. 600
  17. 295
  18. 375
  19. 2000
  20. 3300
  21. 2700
  22. 3650
  23. 165
  24. 2950
  25. 95
  26. 395
  27. 325
  28. 300
  29. 210
  30. 4650
  31. 415
  32. 4300
  33. 135
  34. 2050
  35. 3100
  36. 2350
  37. 1550
  38. 65
  39. 270
  40. 125

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