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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 340 · 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. 1.98 × 50 =
  2. 2.28 × 5 =
  3. 3.69 × 50 =
  4. 4.63 × 5 =
  5. 5.26 × 5 =
  6. 6.83 × 50 =
  7. 7.56 × 50 =
  8. 8.95 × 5 =
  9. 9.88 × 50 =
  10. 10.35 × 50 =
  11. 11.71 × 5 =
  12. 12.50 × 5 =
  13. 13.35 × 5 =
  14. 14.35 × 5 =
  15. 15.22 × 50 =
  16. 16.27 × 5 =
  17. 17.46 × 5 =
  18. 18.48 × 50 =
  19. 19.39 × 5 =
  20. 20.97 × 5 =
  21. 21.87 × 5 =
  22. 22.20 × 5 =
  23. 23.27 × 5 =
  24. 24.40 × 5 =
  25. 25.19 × 5 =
  26. 26.17 × 50 =
  27. 27.36 × 5 =
  28. 28.62 × 5 =
  29. 29.88 × 50 =
  30. 30.81 × 5 =
  31. 31.41 × 5 =
  32. 32.75 × 50 =
  33. 33.76 × 5 =
  34. 34.51 × 5 =
  35. 35.93 × 50 =
  36. 36.84 × 5 =
  37. 37.75 × 50 =
  38. 38.67 × 50 =
  39. 39.64 × 50 =
  40. 40.80 × 50 =

Answer key

  1. 4900
  2. 140
  3. 3450
  4. 315
  5. 130
  6. 4150
  7. 2800
  8. 475
  9. 4400
  10. 1750
  11. 355
  12. 250
  13. 175
  14. 175
  15. 1100
  16. 135
  17. 230
  18. 2400
  19. 195
  20. 485
  21. 435
  22. 100
  23. 135
  24. 200
  25. 95
  26. 850
  27. 180
  28. 310
  29. 4400
  30. 405
  31. 205
  32. 3750
  33. 380
  34. 255
  35. 4650
  36. 420
  37. 3750
  38. 3350
  39. 3200
  40. 4000

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