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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 276 · 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. 1.92 × 5 =
  2. 2.79 × 5 =
  3. 3.84 × 50 =
  4. 4.49 × 50 =
  5. 5.25 × 5 =
  6. 6.79 × 5 =
  7. 7.63 × 5 =
  8. 8.48 × 5 =
  9. 9.84 × 5 =
  10. 10.73 × 50 =
  11. 11.76 × 5 =
  12. 12.82 × 5 =
  13. 13.60 × 50 =
  14. 14.12 × 50 =
  15. 15.18 × 5 =
  16. 16.57 × 5 =
  17. 17.69 × 5 =
  18. 18.53 × 50 =
  19. 19.36 × 5 =
  20. 20.94 × 50 =
  21. 21.35 × 5 =
  22. 22.47 × 5 =
  23. 23.13 × 50 =
  24. 24.28 × 50 =
  25. 25.74 × 5 =
  26. 26.53 × 5 =
  27. 27.59 × 50 =
  28. 28.70 × 50 =
  29. 29.36 × 5 =
  30. 30.96 × 50 =
  31. 31.42 × 50 =
  32. 32.45 × 5 =
  33. 33.12 × 50 =
  34. 34.32 × 5 =
  35. 35.89 × 5 =
  36. 36.53 × 50 =
  37. 37.63 × 50 =
  38. 38.90 × 50 =
  39. 39.38 × 5 =
  40. 40.89 × 50 =

Answer key

  1. 460
  2. 395
  3. 4200
  4. 2450
  5. 125
  6. 395
  7. 315
  8. 240
  9. 420
  10. 3650
  11. 380
  12. 410
  13. 3000
  14. 600
  15. 90
  16. 285
  17. 345
  18. 2650
  19. 180
  20. 4700
  21. 175
  22. 235
  23. 650
  24. 1400
  25. 370
  26. 265
  27. 2950
  28. 3500
  29. 180
  30. 4800
  31. 2100
  32. 225
  33. 600
  34. 160
  35. 445
  36. 2650
  37. 3150
  38. 4500
  39. 190
  40. 4450

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