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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 558 · 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. 1.24 × 5 =
  2. 2.91 × 5 =
  3. 3.25 × 5 =
  4. 4.41 × 5 =
  5. 5.65 × 5 =
  6. 6.45 × 5 =
  7. 7.67 × 50 =
  8. 8.38 × 5 =
  9. 9.61 × 50 =
  10. 10.51 × 50 =
  11. 11.68 × 50 =
  12. 12.33 × 5 =
  13. 13.44 × 5 =
  14. 14.40 × 50 =
  15. 15.88 × 50 =
  16. 16.78 × 5 =
  17. 17.12 × 5 =
  18. 18.15 × 50 =
  19. 19.94 × 50 =
  20. 20.22 × 50 =
  21. 21.42 × 5 =
  22. 22.49 × 50 =
  23. 23.23 × 50 =
  24. 24.12 × 50 =
  25. 25.82 × 50 =
  26. 26.34 × 50 =
  27. 27.73 × 50 =
  28. 28.28 × 5 =
  29. 29.43 × 50 =
  30. 30.12 × 5 =
  31. 31.54 × 50 =
  32. 32.21 × 50 =
  33. 33.51 × 5 =
  34. 34.67 × 5 =
  35. 35.50 × 5 =
  36. 36.75 × 5 =
  37. 37.26 × 50 =
  38. 38.78 × 5 =
  39. 39.70 × 5 =
  40. 40.25 × 5 =

Answer key

  1. 120
  2. 455
  3. 125
  4. 205
  5. 325
  6. 225
  7. 3350
  8. 190
  9. 3050
  10. 2550
  11. 3400
  12. 165
  13. 220
  14. 2000
  15. 4400
  16. 390
  17. 60
  18. 750
  19. 4700
  20. 1100
  21. 210
  22. 2450
  23. 1150
  24. 600
  25. 4100
  26. 1700
  27. 3650
  28. 140
  29. 2150
  30. 60
  31. 2700
  32. 1050
  33. 255
  34. 335
  35. 250
  36. 375
  37. 1300
  38. 390
  39. 350
  40. 125

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