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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 774 · 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. 1.90 × 50 =
  2. 2.55 × 50 =
  3. 3.88 × 5 =
  4. 4.59 × 50 =
  5. 5.45 × 50 =
  6. 6.46 × 5 =
  7. 7.46 × 5 =
  8. 8.90 × 50 =
  9. 9.36 × 5 =
  10. 10.78 × 5 =
  11. 11.22 × 50 =
  12. 12.52 × 5 =
  13. 13.71 × 50 =
  14. 14.18 × 50 =
  15. 15.62 × 5 =
  16. 16.64 × 5 =
  17. 17.77 × 5 =
  18. 18.33 × 5 =
  19. 19.83 × 50 =
  20. 20.17 × 50 =
  21. 21.89 × 5 =
  22. 22.59 × 5 =
  23. 23.34 × 50 =
  24. 24.73 × 5 =
  25. 25.75 × 5 =
  26. 26.68 × 5 =
  27. 27.17 × 5 =
  28. 28.66 × 50 =
  29. 29.31 × 5 =
  30. 30.39 × 5 =
  31. 31.48 × 5 =
  32. 32.14 × 5 =
  33. 33.77 × 5 =
  34. 34.86 × 5 =
  35. 35.49 × 50 =
  36. 36.24 × 5 =
  37. 37.42 × 50 =
  38. 38.51 × 50 =
  39. 39.37 × 5 =
  40. 40.22 × 5 =

Answer key

  1. 4500
  2. 2750
  3. 440
  4. 2950
  5. 2250
  6. 230
  7. 230
  8. 4500
  9. 180
  10. 390
  11. 1100
  12. 260
  13. 3550
  14. 900
  15. 310
  16. 320
  17. 385
  18. 165
  19. 4150
  20. 850
  21. 445
  22. 295
  23. 1700
  24. 365
  25. 375
  26. 340
  27. 85
  28. 3300
  29. 155
  30. 195
  31. 240
  32. 70
  33. 385
  34. 430
  35. 2450
  36. 120
  37. 2100
  38. 2550
  39. 185
  40. 110

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