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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 358 · 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. 1.52 × 5 =
  2. 2.34 × 5 =
  3. 3.65 × 5 =
  4. 4.57 × 5 =
  5. 5.20 × 50 =
  6. 6.88 × 5 =
  7. 7.15 × 50 =
  8. 8.57 × 50 =
  9. 9.72 × 5 =
  10. 10.24 × 5 =
  11. 11.25 × 5 =
  12. 12.35 × 50 =
  13. 13.27 × 5 =
  14. 14.22 × 5 =
  15. 15.74 × 5 =
  16. 16.22 × 50 =
  17. 17.32 × 50 =
  18. 18.89 × 50 =
  19. 19.16 × 50 =
  20. 20.53 × 50 =
  21. 21.55 × 50 =
  22. 22.79 × 50 =
  23. 23.61 × 50 =
  24. 24.31 × 5 =
  25. 25.35 × 5 =
  26. 26.24 × 50 =
  27. 27.63 × 5 =
  28. 28.56 × 5 =
  29. 29.13 × 5 =
  30. 30.84 × 5 =
  31. 31.39 × 5 =
  32. 32.73 × 5 =
  33. 33.80 × 5 =
  34. 34.17 × 50 =
  35. 35.18 × 50 =
  36. 36.46 × 5 =
  37. 37.90 × 50 =
  38. 38.88 × 50 =
  39. 39.27 × 50 =
  40. 40.98 × 5 =

Answer key

  1. 260
  2. 170
  3. 325
  4. 285
  5. 1000
  6. 440
  7. 750
  8. 2850
  9. 360
  10. 120
  11. 125
  12. 1750
  13. 135
  14. 110
  15. 370
  16. 1100
  17. 1600
  18. 4450
  19. 800
  20. 2650
  21. 2750
  22. 3950
  23. 3050
  24. 155
  25. 175
  26. 1200
  27. 315
  28. 280
  29. 65
  30. 420
  31. 195
  32. 365
  33. 400
  34. 850
  35. 900
  36. 230
  37. 4500
  38. 4400
  39. 1350
  40. 490

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