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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 308 · 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. 1.30 × 5 =
  2. 2.52 × 50 =
  3. 3.73 × 50 =
  4. 4.20 × 50 =
  5. 5.75 × 5 =
  6. 6.56 × 5 =
  7. 7.38 × 50 =
  8. 8.66 × 5 =
  9. 9.55 × 5 =
  10. 10.18 × 5 =
  11. 11.50 × 5 =
  12. 12.68 × 5 =
  13. 13.19 × 5 =
  14. 14.39 × 50 =
  15. 15.97 × 5 =
  16. 16.50 × 5 =
  17. 17.88 × 50 =
  18. 18.51 × 5 =
  19. 19.22 × 5 =
  20. 20.66 × 5 =
  21. 21.71 × 50 =
  22. 22.73 × 5 =
  23. 23.47 × 50 =
  24. 24.89 × 5 =
  25. 25.33 × 5 =
  26. 26.71 × 5 =
  27. 27.41 × 5 =
  28. 28.57 × 5 =
  29. 29.24 × 50 =
  30. 30.34 × 5 =
  31. 31.31 × 5 =
  32. 32.22 × 50 =
  33. 33.27 × 5 =
  34. 34.92 × 5 =
  35. 35.79 × 5 =
  36. 36.26 × 50 =
  37. 37.32 × 5 =
  38. 38.65 × 5 =
  39. 39.22 × 50 =
  40. 40.92 × 50 =

Answer key

  1. 150
  2. 2600
  3. 3650
  4. 1000
  5. 375
  6. 280
  7. 1900
  8. 330
  9. 275
  10. 90
  11. 250
  12. 340
  13. 95
  14. 1950
  15. 485
  16. 250
  17. 4400
  18. 255
  19. 110
  20. 330
  21. 3550
  22. 365
  23. 2350
  24. 445
  25. 165
  26. 355
  27. 205
  28. 285
  29. 1200
  30. 170
  31. 155
  32. 1100
  33. 135
  34. 460
  35. 395
  36. 1300
  37. 160
  38. 325
  39. 1100
  40. 4600

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