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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 207 · 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. 1.33 × 5 =
  2. 2.15 × 50 =
  3. 3.63 × 5 =
  4. 4.18 × 5 =
  5. 5.25 × 50 =
  6. 6.51 × 5 =
  7. 7.44 × 50 =
  8. 8.91 × 5 =
  9. 9.59 × 5 =
  10. 10.70 × 50 =
  11. 11.43 × 5 =
  12. 12.48 × 5 =
  13. 13.76 × 5 =
  14. 14.65 × 5 =
  15. 15.45 × 50 =
  16. 16.44 × 50 =
  17. 17.43 × 5 =
  18. 18.84 × 5 =
  19. 19.98 × 5 =
  20. 20.55 × 50 =
  21. 21.59 × 5 =
  22. 22.26 × 50 =
  23. 23.73 × 50 =
  24. 24.34 × 50 =
  25. 25.72 × 50 =
  26. 26.58 × 50 =
  27. 27.37 × 50 =
  28. 28.29 × 5 =
  29. 29.27 × 5 =
  30. 30.27 × 5 =
  31. 31.71 × 50 =
  32. 32.35 × 50 =
  33. 33.19 × 50 =
  34. 34.74 × 5 =
  35. 35.73 × 5 =
  36. 36.41 × 50 =
  37. 37.13 × 50 =
  38. 38.89 × 50 =
  39. 39.98 × 50 =
  40. 40.56 × 50 =

Answer key

  1. 165
  2. 750
  3. 315
  4. 90
  5. 1250
  6. 255
  7. 2200
  8. 455
  9. 295
  10. 3500
  11. 215
  12. 240
  13. 380
  14. 325
  15. 2250
  16. 2200
  17. 215
  18. 420
  19. 490
  20. 2750
  21. 295
  22. 1300
  23. 3650
  24. 1700
  25. 3600
  26. 2900
  27. 1850
  28. 145
  29. 135
  30. 135
  31. 3550
  32. 1750
  33. 950
  34. 370
  35. 365
  36. 2050
  37. 650
  38. 4450
  39. 4900
  40. 2800

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