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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 158 · 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. 1.41 × 5 =
  2. 2.46 × 5 =
  3. 3.45 × 5 =
  4. 4.36 × 5 =
  5. 5.67 × 5 =
  6. 6.25 × 50 =
  7. 7.45 × 50 =
  8. 8.15 × 5 =
  9. 9.43 × 50 =
  10. 10.63 × 50 =
  11. 11.47 × 5 =
  12. 12.22 × 5 =
  13. 13.65 × 50 =
  14. 14.48 × 50 =
  15. 15.21 × 50 =
  16. 16.59 × 50 =
  17. 17.68 × 50 =
  18. 18.86 × 5 =
  19. 19.68 × 5 =
  20. 20.53 × 50 =
  21. 21.49 × 50 =
  22. 22.72 × 50 =
  23. 23.23 × 5 =
  24. 24.24 × 5 =
  25. 25.31 × 5 =
  26. 26.45 × 50 =
  27. 27.71 × 50 =
  28. 28.54 × 5 =
  29. 29.18 × 5 =
  30. 30.61 × 5 =
  31. 31.18 × 5 =
  32. 32.31 × 50 =
  33. 33.81 × 50 =
  34. 34.38 × 5 =
  35. 35.80 × 50 =
  36. 36.58 × 50 =
  37. 37.56 × 50 =
  38. 38.32 × 5 =
  39. 39.24 × 5 =
  40. 40.90 × 5 =

Answer key

  1. 205
  2. 230
  3. 225
  4. 180
  5. 335
  6. 1250
  7. 2250
  8. 75
  9. 2150
  10. 3150
  11. 235
  12. 110
  13. 3250
  14. 2400
  15. 1050
  16. 2950
  17. 3400
  18. 430
  19. 340
  20. 2650
  21. 2450
  22. 3600
  23. 115
  24. 120
  25. 155
  26. 2250
  27. 3550
  28. 270
  29. 90
  30. 305
  31. 90
  32. 1550
  33. 4050
  34. 190
  35. 4000
  36. 2900
  37. 2800
  38. 160
  39. 120
  40. 450

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