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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 171 · 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 × 5 =
  2. 2.63 × 5 =
  3. 3.34 × 50 =
  4. 4.93 × 50 =
  5. 5.86 × 5 =
  6. 6.37 × 5 =
  7. 7.24 × 5 =
  8. 8.17 × 5 =
  9. 9.74 × 5 =
  10. 10.38 × 5 =
  11. 11.56 × 50 =
  12. 12.21 × 5 =
  13. 13.71 × 50 =
  14. 14.52 × 5 =
  15. 15.97 × 5 =
  16. 16.97 × 5 =
  17. 17.62 × 50 =
  18. 18.33 × 5 =
  19. 19.94 × 5 =
  20. 20.37 × 50 =
  21. 21.39 × 50 =
  22. 22.89 × 50 =
  23. 23.23 × 50 =
  24. 24.86 × 5 =
  25. 25.65 × 5 =
  26. 26.96 × 5 =
  27. 27.17 × 5 =
  28. 28.59 × 50 =
  29. 29.41 × 5 =
  30. 30.43 × 5 =
  31. 31.18 × 5 =
  32. 32.95 × 5 =
  33. 33.67 × 5 =
  34. 34.47 × 5 =
  35. 35.21 × 5 =
  36. 36.41 × 5 =
  37. 37.44 × 5 =
  38. 38.49 × 5 =
  39. 39.60 × 5 =
  40. 40.23 × 50 =

Answer key

  1. 130
  2. 315
  3. 1700
  4. 4650
  5. 430
  6. 185
  7. 120
  8. 85
  9. 370
  10. 190
  11. 2800
  12. 105
  13. 3550
  14. 260
  15. 485
  16. 485
  17. 3100
  18. 165
  19. 470
  20. 1850
  21. 1950
  22. 4450
  23. 1150
  24. 430
  25. 325
  26. 480
  27. 85
  28. 2950
  29. 205
  30. 215
  31. 90
  32. 475
  33. 335
  34. 235
  35. 105
  36. 205
  37. 220
  38. 245
  39. 300
  40. 1150

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