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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 514 · 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. 1.76 × 50 =
  2. 2.21 × 5 =
  3. 3.16 × 50 =
  4. 4.74 × 50 =
  5. 5.45 × 50 =
  6. 6.43 × 5 =
  7. 7.28 × 50 =
  8. 8.39 × 50 =
  9. 9.82 × 5 =
  10. 10.29 × 5 =
  11. 11.82 × 50 =
  12. 12.66 × 50 =
  13. 13.68 × 50 =
  14. 14.52 × 5 =
  15. 15.27 × 5 =
  16. 16.27 × 50 =
  17. 17.19 × 5 =
  18. 18.59 × 50 =
  19. 19.32 × 50 =
  20. 20.28 × 5 =
  21. 21.71 × 50 =
  22. 22.41 × 50 =
  23. 23.17 × 50 =
  24. 24.58 × 50 =
  25. 25.49 × 5 =
  26. 26.98 × 50 =
  27. 27.49 × 5 =
  28. 28.64 × 50 =
  29. 29.37 × 5 =
  30. 30.45 × 5 =
  31. 31.44 × 5 =
  32. 32.69 × 50 =
  33. 33.57 × 5 =
  34. 34.34 × 5 =
  35. 35.61 × 50 =
  36. 36.29 × 50 =
  37. 37.28 × 50 =
  38. 38.82 × 50 =
  39. 39.52 × 5 =
  40. 40.36 × 5 =

Answer key

  1. 3800
  2. 105
  3. 800
  4. 3700
  5. 2250
  6. 215
  7. 1400
  8. 1950
  9. 410
  10. 145
  11. 4100
  12. 3300
  13. 3400
  14. 260
  15. 135
  16. 1350
  17. 95
  18. 2950
  19. 1600
  20. 140
  21. 3550
  22. 2050
  23. 850
  24. 2900
  25. 245
  26. 4900
  27. 245
  28. 3200
  29. 185
  30. 225
  31. 220
  32. 3450
  33. 285
  34. 170
  35. 3050
  36. 1450
  37. 1400
  38. 4100
  39. 260
  40. 180

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