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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 286 · 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. 1.94 × 50 =
  2. 2.65 × 50 =
  3. 3.18 × 50 =
  4. 4.65 × 5 =
  5. 5.71 × 5 =
  6. 6.89 × 50 =
  7. 7.56 × 50 =
  8. 8.67 × 50 =
  9. 9.93 × 50 =
  10. 10.61 × 5 =
  11. 11.47 × 5 =
  12. 12.71 × 50 =
  13. 13.82 × 50 =
  14. 14.64 × 50 =
  15. 15.51 × 50 =
  16. 16.33 × 50 =
  17. 17.24 × 5 =
  18. 18.54 × 5 =
  19. 19.17 × 50 =
  20. 20.64 × 5 =
  21. 21.38 × 50 =
  22. 22.53 × 5 =
  23. 23.95 × 50 =
  24. 24.19 × 50 =
  25. 25.28 × 5 =
  26. 26.31 × 5 =
  27. 27.86 × 50 =
  28. 28.74 × 50 =
  29. 29.97 × 50 =
  30. 30.94 × 5 =
  31. 31.35 × 5 =
  32. 32.59 × 50 =
  33. 33.66 × 5 =
  34. 34.66 × 50 =
  35. 35.51 × 50 =
  36. 36.93 × 50 =
  37. 37.22 × 5 =
  38. 38.91 × 50 =
  39. 39.33 × 50 =
  40. 40.59 × 50 =

Answer key

  1. 4700
  2. 3250
  3. 900
  4. 325
  5. 355
  6. 4450
  7. 2800
  8. 3350
  9. 4650
  10. 305
  11. 235
  12. 3550
  13. 4100
  14. 3200
  15. 2550
  16. 1650
  17. 120
  18. 270
  19. 850
  20. 320
  21. 1900
  22. 265
  23. 4750
  24. 950
  25. 140
  26. 155
  27. 4300
  28. 3700
  29. 4850
  30. 470
  31. 175
  32. 2950
  33. 330
  34. 3300
  35. 2550
  36. 4650
  37. 110
  38. 4550
  39. 1650
  40. 2950

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