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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 54 · 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. 1.41 × 5 =
  2. 2.96 × 5 =
  3. 3.71 × 50 =
  4. 4.58 × 50 =
  5. 5.23 × 5 =
  6. 6.18 × 5 =
  7. 7.18 × 5 =
  8. 8.60 × 50 =
  9. 9.95 × 5 =
  10. 10.85 × 5 =
  11. 11.29 × 50 =
  12. 12.91 × 50 =
  13. 13.61 × 50 =
  14. 14.59 × 5 =
  15. 15.72 × 50 =
  16. 16.47 × 5 =
  17. 17.39 × 50 =
  18. 18.57 × 5 =
  19. 19.72 × 50 =
  20. 20.43 × 5 =
  21. 21.16 × 50 =
  22. 22.42 × 50 =
  23. 23.26 × 5 =
  24. 24.64 × 5 =
  25. 25.26 × 5 =
  26. 26.40 × 5 =
  27. 27.62 × 5 =
  28. 28.83 × 50 =
  29. 29.57 × 50 =
  30. 30.42 × 50 =
  31. 31.73 × 5 =
  32. 32.27 × 50 =
  33. 33.13 × 50 =
  34. 34.85 × 50 =
  35. 35.34 × 5 =
  36. 36.62 × 50 =
  37. 37.92 × 50 =
  38. 38.89 × 50 =
  39. 39.61 × 50 =
  40. 40.96 × 5 =

Answer key

  1. 205
  2. 480
  3. 3550
  4. 2900
  5. 115
  6. 90
  7. 90
  8. 3000
  9. 475
  10. 425
  11. 1450
  12. 4550
  13. 3050
  14. 295
  15. 3600
  16. 235
  17. 1950
  18. 285
  19. 3600
  20. 215
  21. 800
  22. 2100
  23. 130
  24. 320
  25. 130
  26. 200
  27. 310
  28. 4150
  29. 2850
  30. 2100
  31. 365
  32. 1350
  33. 650
  34. 4250
  35. 170
  36. 3100
  37. 4600
  38. 4450
  39. 3050
  40. 480

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