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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 297 · 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. 1.72 × 50 =
  2. 2.71 × 5 =
  3. 3.38 × 5 =
  4. 4.19 × 5 =
  5. 5.51 × 50 =
  6. 6.49 × 5 =
  7. 7.38 × 5 =
  8. 8.34 × 50 =
  9. 9.63 × 5 =
  10. 10.98 × 50 =
  11. 11.94 × 5 =
  12. 12.40 × 5 =
  13. 13.43 × 50 =
  14. 14.20 × 5 =
  15. 15.76 × 5 =
  16. 16.28 × 5 =
  17. 17.28 × 50 =
  18. 18.29 × 5 =
  19. 19.96 × 5 =
  20. 20.69 × 50 =
  21. 21.16 × 50 =
  22. 22.56 × 5 =
  23. 23.88 × 50 =
  24. 24.13 × 5 =
  25. 25.26 × 50 =
  26. 26.33 × 5 =
  27. 27.91 × 5 =
  28. 28.65 × 50 =
  29. 29.86 × 5 =
  30. 30.34 × 50 =
  31. 31.20 × 50 =
  32. 32.61 × 5 =
  33. 33.38 × 5 =
  34. 34.52 × 5 =
  35. 35.79 × 50 =
  36. 36.61 × 5 =
  37. 37.70 × 50 =
  38. 38.15 × 50 =
  39. 39.44 × 50 =
  40. 40.48 × 5 =

Answer key

  1. 3600
  2. 355
  3. 190
  4. 95
  5. 2550
  6. 245
  7. 190
  8. 1700
  9. 315
  10. 4900
  11. 470
  12. 200
  13. 2150
  14. 100
  15. 380
  16. 140
  17. 1400
  18. 145
  19. 480
  20. 3450
  21. 800
  22. 280
  23. 4400
  24. 65
  25. 1300
  26. 165
  27. 455
  28. 3250
  29. 430
  30. 1700
  31. 1000
  32. 305
  33. 190
  34. 260
  35. 3950
  36. 305
  37. 3500
  38. 750
  39. 2200
  40. 240

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