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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 49 · 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. 1.39 × 5 =
  2. 2.89 × 50 =
  3. 3.60 × 50 =
  4. 4.23 × 5 =
  5. 5.44 × 50 =
  6. 6.58 × 5 =
  7. 7.96 × 5 =
  8. 8.83 × 5 =
  9. 9.40 × 50 =
  10. 10.85 × 5 =
  11. 11.39 × 5 =
  12. 12.92 × 50 =
  13. 13.78 × 50 =
  14. 14.67 × 50 =
  15. 15.22 × 5 =
  16. 16.77 × 5 =
  17. 17.34 × 5 =
  18. 18.76 × 5 =
  19. 19.27 × 5 =
  20. 20.82 × 5 =
  21. 21.71 × 50 =
  22. 22.28 × 5 =
  23. 23.20 × 50 =
  24. 24.37 × 50 =
  25. 25.51 × 5 =
  26. 26.31 × 5 =
  27. 27.85 × 5 =
  28. 28.49 × 5 =
  29. 29.68 × 50 =
  30. 30.79 × 5 =
  31. 31.89 × 5 =
  32. 32.35 × 50 =
  33. 33.93 × 5 =
  34. 34.85 × 5 =
  35. 35.25 × 50 =
  36. 36.68 × 5 =
  37. 37.37 × 5 =
  38. 38.86 × 5 =
  39. 39.53 × 5 =
  40. 40.60 × 5 =

Answer key

  1. 195
  2. 4450
  3. 3000
  4. 115
  5. 2200
  6. 290
  7. 480
  8. 415
  9. 2000
  10. 425
  11. 195
  12. 4600
  13. 3900
  14. 3350
  15. 110
  16. 385
  17. 170
  18. 380
  19. 135
  20. 410
  21. 3550
  22. 140
  23. 1000
  24. 1850
  25. 255
  26. 155
  27. 425
  28. 245
  29. 3400
  30. 395
  31. 445
  32. 1750
  33. 465
  34. 425
  35. 1250
  36. 340
  37. 185
  38. 430
  39. 265
  40. 300

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