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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 97 · 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. 1.18 × 50 =
  2. 2.86 × 5 =
  3. 3.57 × 5 =
  4. 4.45 × 5 =
  5. 5.53 × 5 =
  6. 6.72 × 5 =
  7. 7.97 × 5 =
  8. 8.74 × 5 =
  9. 9.64 × 5 =
  10. 10.68 × 5 =
  11. 11.64 × 50 =
  12. 12.64 × 5 =
  13. 13.98 × 50 =
  14. 14.15 × 50 =
  15. 15.72 × 50 =
  16. 16.32 × 5 =
  17. 17.27 × 50 =
  18. 18.13 × 5 =
  19. 19.98 × 5 =
  20. 20.24 × 50 =
  21. 21.83 × 5 =
  22. 22.40 × 50 =
  23. 23.75 × 5 =
  24. 24.57 × 5 =
  25. 25.97 × 5 =
  26. 26.23 × 5 =
  27. 27.85 × 5 =
  28. 28.37 × 5 =
  29. 29.49 × 5 =
  30. 30.21 × 5 =
  31. 31.81 × 5 =
  32. 32.96 × 5 =
  33. 33.19 × 50 =
  34. 34.63 × 5 =
  35. 35.57 × 50 =
  36. 36.13 × 5 =
  37. 37.46 × 5 =
  38. 38.47 × 50 =
  39. 39.67 × 5 =
  40. 40.21 × 5 =

Answer key

  1. 900
  2. 430
  3. 285
  4. 225
  5. 265
  6. 360
  7. 485
  8. 370
  9. 320
  10. 340
  11. 3200
  12. 320
  13. 4900
  14. 750
  15. 3600
  16. 160
  17. 1350
  18. 65
  19. 490
  20. 1200
  21. 415
  22. 2000
  23. 375
  24. 285
  25. 485
  26. 115
  27. 425
  28. 185
  29. 245
  30. 105
  31. 405
  32. 480
  33. 950
  34. 315
  35. 2850
  36. 65
  37. 230
  38. 2350
  39. 335
  40. 105

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