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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 936 · 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. 1.41 × 5 =
  2. 2.65 × 50 =
  3. 3.28 × 50 =
  4. 4.35 × 5 =
  5. 5.50 × 50 =
  6. 6.87 × 50 =
  7. 7.92 × 5 =
  8. 8.14 × 50 =
  9. 9.31 × 5 =
  10. 10.50 × 5 =
  11. 11.56 × 5 =
  12. 12.85 × 5 =
  13. 13.48 × 50 =
  14. 14.75 × 5 =
  15. 15.77 × 50 =
  16. 16.37 × 5 =
  17. 17.71 × 5 =
  18. 18.96 × 5 =
  19. 19.45 × 50 =
  20. 20.76 × 5 =
  21. 21.83 × 5 =
  22. 22.72 × 50 =
  23. 23.63 × 5 =
  24. 24.20 × 50 =
  25. 25.52 × 5 =
  26. 26.84 × 5 =
  27. 27.15 × 50 =
  28. 28.41 × 5 =
  29. 29.75 × 50 =
  30. 30.21 × 5 =
  31. 31.47 × 5 =
  32. 32.45 × 5 =
  33. 33.44 × 50 =
  34. 34.88 × 50 =
  35. 35.69 × 5 =
  36. 36.67 × 50 =
  37. 37.94 × 50 =
  38. 38.22 × 5 =
  39. 39.67 × 5 =
  40. 40.29 × 5 =

Answer key

  1. 205
  2. 3250
  3. 1400
  4. 175
  5. 2500
  6. 4350
  7. 460
  8. 700
  9. 155
  10. 250
  11. 280
  12. 425
  13. 2400
  14. 375
  15. 3850
  16. 185
  17. 355
  18. 480
  19. 2250
  20. 380
  21. 415
  22. 3600
  23. 315
  24. 1000
  25. 260
  26. 420
  27. 750
  28. 205
  29. 3750
  30. 105
  31. 235
  32. 225
  33. 2200
  34. 4400
  35. 345
  36. 3350
  37. 4700
  38. 110
  39. 335
  40. 145

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