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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 185 · 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. 1.50 × 5 =
  2. 2.97 × 50 =
  3. 3.41 × 50 =
  4. 4.70 × 50 =
  5. 5.76 × 50 =
  6. 6.79 × 50 =
  7. 7.50 × 5 =
  8. 8.34 × 5 =
  9. 9.67 × 50 =
  10. 10.76 × 5 =
  11. 11.92 × 5 =
  12. 12.35 × 5 =
  13. 13.76 × 5 =
  14. 14.82 × 5 =
  15. 15.55 × 5 =
  16. 16.79 × 50 =
  17. 17.19 × 5 =
  18. 18.76 × 50 =
  19. 19.91 × 5 =
  20. 20.21 × 50 =
  21. 21.46 × 50 =
  22. 22.30 × 5 =
  23. 23.64 × 50 =
  24. 24.48 × 50 =
  25. 25.91 × 50 =
  26. 26.67 × 5 =
  27. 27.40 × 5 =
  28. 28.38 × 5 =
  29. 29.19 × 5 =
  30. 30.51 × 5 =
  31. 31.30 × 5 =
  32. 32.74 × 5 =
  33. 33.58 × 50 =
  34. 34.18 × 5 =
  35. 35.70 × 50 =
  36. 36.57 × 50 =
  37. 37.96 × 5 =
  38. 38.93 × 5 =
  39. 39.37 × 50 =
  40. 40.20 × 50 =

Answer key

  1. 250
  2. 4850
  3. 2050
  4. 3500
  5. 3800
  6. 3950
  7. 250
  8. 170
  9. 3350
  10. 380
  11. 460
  12. 175
  13. 380
  14. 410
  15. 275
  16. 3950
  17. 95
  18. 3800
  19. 455
  20. 1050
  21. 2300
  22. 150
  23. 3200
  24. 2400
  25. 4550
  26. 335
  27. 200
  28. 190
  29. 95
  30. 255
  31. 150
  32. 370
  33. 2900
  34. 90
  35. 3500
  36. 2850
  37. 480
  38. 465
  39. 1850
  40. 1000

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