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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 374 · 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. 1.53 × 50 =
  2. 2.22 × 5 =
  3. 3.69 × 5 =
  4. 4.26 × 50 =
  5. 5.13 × 5 =
  6. 6.54 × 50 =
  7. 7.34 × 5 =
  8. 8.97 × 5 =
  9. 9.38 × 5 =
  10. 10.39 × 5 =
  11. 11.92 × 50 =
  12. 12.77 × 5 =
  13. 13.14 × 5 =
  14. 14.91 × 50 =
  15. 15.82 × 50 =
  16. 16.30 × 5 =
  17. 17.14 × 5 =
  18. 18.39 × 5 =
  19. 19.62 × 5 =
  20. 20.54 × 5 =
  21. 21.23 × 50 =
  22. 22.33 × 50 =
  23. 23.52 × 50 =
  24. 24.82 × 50 =
  25. 25.82 × 50 =
  26. 26.83 × 50 =
  27. 27.76 × 50 =
  28. 28.94 × 5 =
  29. 29.92 × 5 =
  30. 30.90 × 50 =
  31. 31.14 × 5 =
  32. 32.33 × 5 =
  33. 33.35 × 5 =
  34. 34.58 × 50 =
  35. 35.54 × 5 =
  36. 36.40 × 50 =
  37. 37.32 × 5 =
  38. 38.48 × 5 =
  39. 39.52 × 5 =
  40. 40.45 × 5 =

Answer key

  1. 2650
  2. 110
  3. 345
  4. 1300
  5. 65
  6. 2700
  7. 170
  8. 485
  9. 190
  10. 195
  11. 4600
  12. 385
  13. 70
  14. 4550
  15. 4100
  16. 150
  17. 70
  18. 195
  19. 310
  20. 270
  21. 1150
  22. 1650
  23. 2600
  24. 4100
  25. 4100
  26. 4150
  27. 3800
  28. 470
  29. 460
  30. 4500
  31. 70
  32. 165
  33. 175
  34. 2900
  35. 270
  36. 2000
  37. 160
  38. 240
  39. 260
  40. 225

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