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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 573 · 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. 1.76 × 5 =
  2. 2.83 × 50 =
  3. 3.79 × 50 =
  4. 4.23 × 5 =
  5. 5.86 × 5 =
  6. 6.49 × 50 =
  7. 7.75 × 50 =
  8. 8.59 × 50 =
  9. 9.72 × 50 =
  10. 10.24 × 5 =
  11. 11.37 × 5 =
  12. 12.34 × 5 =
  13. 13.71 × 5 =
  14. 14.60 × 50 =
  15. 15.45 × 5 =
  16. 16.95 × 5 =
  17. 17.86 × 5 =
  18. 18.38 × 5 =
  19. 19.31 × 5 =
  20. 20.69 × 50 =
  21. 21.48 × 50 =
  22. 22.45 × 50 =
  23. 23.95 × 50 =
  24. 24.16 × 5 =
  25. 25.92 × 5 =
  26. 26.76 × 5 =
  27. 27.40 × 50 =
  28. 28.21 × 5 =
  29. 29.65 × 5 =
  30. 30.84 × 50 =
  31. 31.56 × 50 =
  32. 32.34 × 5 =
  33. 33.58 × 50 =
  34. 34.74 × 5 =
  35. 35.73 × 5 =
  36. 36.18 × 50 =
  37. 37.29 × 5 =
  38. 38.78 × 5 =
  39. 39.78 × 5 =
  40. 40.20 × 50 =

Answer key

  1. 380
  2. 4150
  3. 3950
  4. 115
  5. 430
  6. 2450
  7. 3750
  8. 2950
  9. 3600
  10. 120
  11. 185
  12. 170
  13. 355
  14. 3000
  15. 225
  16. 475
  17. 430
  18. 190
  19. 155
  20. 3450
  21. 2400
  22. 2250
  23. 4750
  24. 80
  25. 460
  26. 380
  27. 2000
  28. 105
  29. 325
  30. 4200
  31. 2800
  32. 170
  33. 2900
  34. 370
  35. 365
  36. 900
  37. 145
  38. 390
  39. 390
  40. 1000

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