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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 496 · 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. 1.90 × 5 =
  2. 2.29 × 5 =
  3. 3.96 × 5 =
  4. 4.71 × 5 =
  5. 5.91 × 5 =
  6. 6.58 × 5 =
  7. 7.65 × 50 =
  8. 8.74 × 50 =
  9. 9.82 × 5 =
  10. 10.61 × 5 =
  11. 11.70 × 50 =
  12. 12.40 × 50 =
  13. 13.36 × 50 =
  14. 14.39 × 50 =
  15. 15.41 × 5 =
  16. 16.65 × 50 =
  17. 17.39 × 5 =
  18. 18.80 × 5 =
  19. 19.43 × 50 =
  20. 20.29 × 5 =
  21. 21.36 × 50 =
  22. 22.76 × 50 =
  23. 23.44 × 5 =
  24. 24.96 × 5 =
  25. 25.56 × 50 =
  26. 26.63 × 50 =
  27. 27.35 × 50 =
  28. 28.40 × 50 =
  29. 29.82 × 50 =
  30. 30.82 × 5 =
  31. 31.58 × 50 =
  32. 32.88 × 5 =
  33. 33.13 × 50 =
  34. 34.55 × 5 =
  35. 35.65 × 50 =
  36. 36.70 × 50 =
  37. 37.59 × 50 =
  38. 38.34 × 50 =
  39. 39.22 × 5 =
  40. 40.16 × 5 =

Answer key

  1. 450
  2. 145
  3. 480
  4. 355
  5. 455
  6. 290
  7. 3250
  8. 3700
  9. 410
  10. 305
  11. 3500
  12. 2000
  13. 1800
  14. 1950
  15. 205
  16. 3250
  17. 195
  18. 400
  19. 2150
  20. 145
  21. 1800
  22. 3800
  23. 220
  24. 480
  25. 2800
  26. 3150
  27. 1750
  28. 2000
  29. 4100
  30. 410
  31. 2900
  32. 440
  33. 650
  34. 275
  35. 3250
  36. 3500
  37. 2950
  38. 1700
  39. 110
  40. 80

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