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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 552 · 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. 1.77 × 5 =
  2. 2.60 × 50 =
  3. 3.84 × 5 =
  4. 4.80 × 5 =
  5. 5.38 × 50 =
  6. 6.74 × 5 =
  7. 7.87 × 50 =
  8. 8.79 × 50 =
  9. 9.39 × 50 =
  10. 10.34 × 5 =
  11. 11.63 × 5 =
  12. 12.97 × 5 =
  13. 13.57 × 5 =
  14. 14.26 × 50 =
  15. 15.70 × 50 =
  16. 16.38 × 5 =
  17. 17.43 × 50 =
  18. 18.24 × 5 =
  19. 19.73 × 5 =
  20. 20.95 × 5 =
  21. 21.21 × 5 =
  22. 22.40 × 50 =
  23. 23.30 × 50 =
  24. 24.60 × 50 =
  25. 25.73 × 50 =
  26. 26.25 × 50 =
  27. 27.95 × 5 =
  28. 28.14 × 5 =
  29. 29.30 × 50 =
  30. 30.61 × 5 =
  31. 31.55 × 5 =
  32. 32.61 × 5 =
  33. 33.18 × 5 =
  34. 34.74 × 5 =
  35. 35.91 × 5 =
  36. 36.23 × 5 =
  37. 37.65 × 50 =
  38. 38.23 × 5 =
  39. 39.95 × 5 =
  40. 40.25 × 5 =

Answer key

  1. 385
  2. 3000
  3. 420
  4. 400
  5. 1900
  6. 370
  7. 4350
  8. 3950
  9. 1950
  10. 170
  11. 315
  12. 485
  13. 285
  14. 1300
  15. 3500
  16. 190
  17. 2150
  18. 120
  19. 365
  20. 475
  21. 105
  22. 2000
  23. 1500
  24. 3000
  25. 3650
  26. 1250
  27. 475
  28. 70
  29. 1500
  30. 305
  31. 275
  32. 305
  33. 90
  34. 370
  35. 455
  36. 115
  37. 3250
  38. 115
  39. 475
  40. 125

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