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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 850 · 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. 1.43 × 50 =
  2. 2.55 × 50 =
  3. 3.66 × 5 =
  4. 4.64 × 5 =
  5. 5.75 × 5 =
  6. 6.62 × 5 =
  7. 7.51 × 50 =
  8. 8.29 × 50 =
  9. 9.29 × 5 =
  10. 10.21 × 5 =
  11. 11.98 × 50 =
  12. 12.31 × 50 =
  13. 13.69 × 50 =
  14. 14.76 × 50 =
  15. 15.95 × 5 =
  16. 16.49 × 50 =
  17. 17.23 × 50 =
  18. 18.37 × 50 =
  19. 19.32 × 5 =
  20. 20.32 × 5 =
  21. 21.93 × 50 =
  22. 22.43 × 50 =
  23. 23.55 × 5 =
  24. 24.22 × 50 =
  25. 25.91 × 5 =
  26. 26.82 × 5 =
  27. 27.49 × 50 =
  28. 28.12 × 5 =
  29. 29.73 × 5 =
  30. 30.23 × 50 =
  31. 31.62 × 50 =
  32. 32.51 × 5 =
  33. 33.13 × 5 =
  34. 34.63 × 5 =
  35. 35.53 × 5 =
  36. 36.81 × 5 =
  37. 37.66 × 5 =
  38. 38.33 × 50 =
  39. 39.29 × 50 =
  40. 40.73 × 50 =

Answer key

  1. 2150
  2. 2750
  3. 330
  4. 320
  5. 375
  6. 310
  7. 2550
  8. 1450
  9. 145
  10. 105
  11. 4900
  12. 1550
  13. 3450
  14. 3800
  15. 475
  16. 2450
  17. 1150
  18. 1850
  19. 160
  20. 160
  21. 4650
  22. 2150
  23. 275
  24. 1100
  25. 455
  26. 410
  27. 2450
  28. 60
  29. 365
  30. 1150
  31. 3100
  32. 255
  33. 65
  34. 315
  35. 265
  36. 405
  37. 330
  38. 1650
  39. 1450
  40. 3650

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