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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 192 · 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. 2.13 × 5 =
  3. 3.93 × 5 =
  4. 4.39 × 5 =
  5. 5.18 × 50 =
  6. 6.91 × 5 =
  7. 7.65 × 5 =
  8. 8.78 × 5 =
  9. 9.60 × 50 =
  10. 10.94 × 5 =
  11. 11.24 × 5 =
  12. 12.33 × 5 =
  13. 13.22 × 5 =
  14. 14.97 × 50 =
  15. 15.82 × 5 =
  16. 16.67 × 50 =
  17. 17.85 × 5 =
  18. 18.69 × 50 =
  19. 19.35 × 5 =
  20. 20.59 × 5 =
  21. 21.89 × 5 =
  22. 22.65 × 50 =
  23. 23.89 × 50 =
  24. 24.49 × 50 =
  25. 25.56 × 5 =
  26. 26.38 × 5 =
  27. 27.69 × 50 =
  28. 28.39 × 50 =
  29. 29.92 × 5 =
  30. 30.82 × 50 =
  31. 31.86 × 5 =
  32. 32.63 × 50 =
  33. 33.19 × 5 =
  34. 34.93 × 5 =
  35. 35.16 × 5 =
  36. 36.55 × 5 =
  37. 37.94 × 5 =
  38. 38.92 × 50 =
  39. 39.65 × 5 =
  40. 40.65 × 50 =

Answer key

  1. 1900
  2. 65
  3. 465
  4. 195
  5. 900
  6. 455
  7. 325
  8. 390
  9. 3000
  10. 470
  11. 120
  12. 165
  13. 110
  14. 4850
  15. 410
  16. 3350
  17. 425
  18. 3450
  19. 175
  20. 295
  21. 445
  22. 3250
  23. 4450
  24. 2450
  25. 280
  26. 190
  27. 3450
  28. 1950
  29. 460
  30. 4100
  31. 430
  32. 3150
  33. 95
  34. 465
  35. 80
  36. 275
  37. 470
  38. 4600
  39. 325
  40. 3250

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