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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 539 · 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. 1.38 × 50 =
  2. 2.78 × 50 =
  3. 3.71 × 5 =
  4. 4.49 × 5 =
  5. 5.18 × 5 =
  6. 6.42 × 50 =
  7. 7.23 × 5 =
  8. 8.44 × 5 =
  9. 9.92 × 50 =
  10. 10.69 × 5 =
  11. 11.55 × 50 =
  12. 12.41 × 50 =
  13. 13.50 × 50 =
  14. 14.20 × 50 =
  15. 15.23 × 50 =
  16. 16.30 × 5 =
  17. 17.22 × 5 =
  18. 18.93 × 50 =
  19. 19.63 × 5 =
  20. 20.95 × 5 =
  21. 21.72 × 5 =
  22. 22.19 × 50 =
  23. 23.20 × 5 =
  24. 24.48 × 50 =
  25. 25.72 × 5 =
  26. 26.64 × 50 =
  27. 27.73 × 50 =
  28. 28.25 × 50 =
  29. 29.72 × 5 =
  30. 30.21 × 50 =
  31. 31.31 × 5 =
  32. 32.46 × 5 =
  33. 33.57 × 5 =
  34. 34.43 × 50 =
  35. 35.92 × 50 =
  36. 36.22 × 5 =
  37. 37.98 × 5 =
  38. 38.51 × 50 =
  39. 39.53 × 5 =
  40. 40.92 × 50 =

Answer key

  1. 1900
  2. 3900
  3. 355
  4. 245
  5. 90
  6. 2100
  7. 115
  8. 220
  9. 4600
  10. 345
  11. 2750
  12. 2050
  13. 2500
  14. 1000
  15. 1150
  16. 150
  17. 110
  18. 4650
  19. 315
  20. 475
  21. 360
  22. 950
  23. 100
  24. 2400
  25. 360
  26. 3200
  27. 3650
  28. 1250
  29. 360
  30. 1050
  31. 155
  32. 230
  33. 285
  34. 2150
  35. 4600
  36. 110
  37. 490
  38. 2550
  39. 265
  40. 4600

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