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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 584 · 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. 1.26 × 50 =
  2. 2.32 × 5 =
  3. 3.58 × 50 =
  4. 4.70 × 5 =
  5. 5.76 × 50 =
  6. 6.45 × 5 =
  7. 7.81 × 5 =
  8. 8.61 × 5 =
  9. 9.49 × 5 =
  10. 10.98 × 50 =
  11. 11.71 × 50 =
  12. 12.95 × 5 =
  13. 13.58 × 5 =
  14. 14.18 × 5 =
  15. 15.33 × 50 =
  16. 16.67 × 50 =
  17. 17.37 × 5 =
  18. 18.57 × 5 =
  19. 19.45 × 5 =
  20. 20.52 × 5 =
  21. 21.88 × 50 =
  22. 22.18 × 50 =
  23. 23.26 × 50 =
  24. 24.56 × 5 =
  25. 25.85 × 5 =
  26. 26.79 × 5 =
  27. 27.63 × 50 =
  28. 28.50 × 5 =
  29. 29.48 × 5 =
  30. 30.78 × 5 =
  31. 31.31 × 5 =
  32. 32.30 × 50 =
  33. 33.76 × 5 =
  34. 34.18 × 50 =
  35. 35.26 × 5 =
  36. 36.36 × 50 =
  37. 37.22 × 5 =
  38. 38.47 × 5 =
  39. 39.48 × 5 =
  40. 40.23 × 5 =

Answer key

  1. 1300
  2. 160
  3. 2900
  4. 350
  5. 3800
  6. 225
  7. 405
  8. 305
  9. 245
  10. 4900
  11. 3550
  12. 475
  13. 290
  14. 90
  15. 1650
  16. 3350
  17. 185
  18. 285
  19. 225
  20. 260
  21. 4400
  22. 900
  23. 1300
  24. 280
  25. 425
  26. 395
  27. 3150
  28. 250
  29. 240
  30. 390
  31. 155
  32. 1500
  33. 380
  34. 900
  35. 130
  36. 1800
  37. 110
  38. 235
  39. 240
  40. 115

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