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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 541 · 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. 1.13 × 5 =
  2. 2.31 × 50 =
  3. 3.66 × 50 =
  4. 4.92 × 5 =
  5. 5.37 × 50 =
  6. 6.94 × 5 =
  7. 7.96 × 5 =
  8. 8.86 × 50 =
  9. 9.69 × 50 =
  10. 10.67 × 50 =
  11. 11.64 × 5 =
  12. 12.28 × 50 =
  13. 13.20 × 50 =
  14. 14.96 × 50 =
  15. 15.93 × 5 =
  16. 16.18 × 5 =
  17. 17.46 × 50 =
  18. 18.63 × 5 =
  19. 19.45 × 5 =
  20. 20.27 × 50 =
  21. 21.71 × 5 =
  22. 22.75 × 50 =
  23. 23.19 × 50 =
  24. 24.70 × 5 =
  25. 25.60 × 5 =
  26. 26.36 × 50 =
  27. 27.57 × 5 =
  28. 28.19 × 5 =
  29. 29.76 × 50 =
  30. 30.58 × 50 =
  31. 31.17 × 5 =
  32. 32.33 × 5 =
  33. 33.82 × 50 =
  34. 34.43 × 5 =
  35. 35.64 × 50 =
  36. 36.73 × 5 =
  37. 37.54 × 5 =
  38. 38.51 × 50 =
  39. 39.95 × 5 =
  40. 40.33 × 5 =

Answer key

  1. 65
  2. 1550
  3. 3300
  4. 460
  5. 1850
  6. 470
  7. 480
  8. 4300
  9. 3450
  10. 3350
  11. 320
  12. 1400
  13. 1000
  14. 4800
  15. 465
  16. 90
  17. 2300
  18. 315
  19. 225
  20. 1350
  21. 355
  22. 3750
  23. 950
  24. 350
  25. 300
  26. 1800
  27. 285
  28. 95
  29. 3800
  30. 2900
  31. 85
  32. 165
  33. 4100
  34. 215
  35. 3200
  36. 365
  37. 270
  38. 2550
  39. 475
  40. 165

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