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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 409 · 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. 1.21 × 5 =
  2. 2.48 × 5 =
  3. 3.95 × 50 =
  4. 4.87 × 5 =
  5. 5.57 × 50 =
  6. 6.50 × 5 =
  7. 7.44 × 50 =
  8. 8.80 × 50 =
  9. 9.53 × 5 =
  10. 10.72 × 5 =
  11. 11.59 × 50 =
  12. 12.55 × 50 =
  13. 13.75 × 50 =
  14. 14.44 × 50 =
  15. 15.26 × 50 =
  16. 16.14 × 5 =
  17. 17.23 × 5 =
  18. 18.70 × 50 =
  19. 19.67 × 50 =
  20. 20.25 × 5 =
  21. 21.52 × 5 =
  22. 22.46 × 50 =
  23. 23.27 × 50 =
  24. 24.56 × 50 =
  25. 25.57 × 50 =
  26. 26.93 × 50 =
  27. 27.84 × 50 =
  28. 28.82 × 50 =
  29. 29.97 × 50 =
  30. 30.33 × 50 =
  31. 31.71 × 5 =
  32. 32.86 × 50 =
  33. 33.26 × 5 =
  34. 34.73 × 5 =
  35. 35.74 × 50 =
  36. 36.58 × 5 =
  37. 37.36 × 50 =
  38. 38.39 × 5 =
  39. 39.24 × 5 =
  40. 40.78 × 5 =

Answer key

  1. 105
  2. 240
  3. 4750
  4. 435
  5. 2850
  6. 250
  7. 2200
  8. 4000
  9. 265
  10. 360
  11. 2950
  12. 2750
  13. 3750
  14. 2200
  15. 1300
  16. 70
  17. 115
  18. 3500
  19. 3350
  20. 125
  21. 260
  22. 2300
  23. 1350
  24. 2800
  25. 2850
  26. 4650
  27. 4200
  28. 4100
  29. 4850
  30. 1650
  31. 355
  32. 4300
  33. 130
  34. 365
  35. 3700
  36. 290
  37. 1800
  38. 195
  39. 120
  40. 390

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