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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 203 · 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. 1.93 × 5 =
  2. 2.18 × 50 =
  3. 3.71 × 50 =
  4. 4.24 × 50 =
  5. 5.72 × 50 =
  6. 6.88 × 5 =
  7. 7.21 × 5 =
  8. 8.79 × 50 =
  9. 9.35 × 5 =
  10. 10.76 × 50 =
  11. 11.45 × 50 =
  12. 12.31 × 50 =
  13. 13.33 × 5 =
  14. 14.27 × 5 =
  15. 15.71 × 50 =
  16. 16.48 × 50 =
  17. 17.17 × 5 =
  18. 18.31 × 5 =
  19. 19.94 × 5 =
  20. 20.73 × 5 =
  21. 21.89 × 5 =
  22. 22.93 × 5 =
  23. 23.67 × 50 =
  24. 24.35 × 5 =
  25. 25.41 × 50 =
  26. 26.20 × 5 =
  27. 27.44 × 5 =
  28. 28.34 × 5 =
  29. 29.70 × 50 =
  30. 30.33 × 50 =
  31. 31.90 × 5 =
  32. 32.29 × 5 =
  33. 33.55 × 50 =
  34. 34.15 × 5 =
  35. 35.17 × 50 =
  36. 36.60 × 50 =
  37. 37.65 × 50 =
  38. 38.13 × 50 =
  39. 39.82 × 50 =
  40. 40.85 × 50 =

Answer key

  1. 465
  2. 900
  3. 3550
  4. 1200
  5. 3600
  6. 440
  7. 105
  8. 3950
  9. 175
  10. 3800
  11. 2250
  12. 1550
  13. 165
  14. 135
  15. 3550
  16. 2400
  17. 85
  18. 155
  19. 470
  20. 365
  21. 445
  22. 465
  23. 3350
  24. 175
  25. 2050
  26. 100
  27. 220
  28. 170
  29. 3500
  30. 1650
  31. 450
  32. 145
  33. 2750
  34. 75
  35. 850
  36. 3000
  37. 3250
  38. 650
  39. 4100
  40. 4250

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