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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 231 · 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. 1.88 × 50 =
  2. 2.89 × 5 =
  3. 3.95 × 5 =
  4. 4.76 × 50 =
  5. 5.26 × 5 =
  6. 6.21 × 5 =
  7. 7.34 × 5 =
  8. 8.57 × 5 =
  9. 9.12 × 50 =
  10. 10.75 × 5 =
  11. 11.29 × 5 =
  12. 12.96 × 50 =
  13. 13.15 × 5 =
  14. 14.23 × 50 =
  15. 15.28 × 50 =
  16. 16.29 × 50 =
  17. 17.90 × 5 =
  18. 18.39 × 50 =
  19. 19.54 × 5 =
  20. 20.23 × 5 =
  21. 21.94 × 5 =
  22. 22.76 × 5 =
  23. 23.72 × 5 =
  24. 24.74 × 50 =
  25. 25.19 × 50 =
  26. 26.97 × 5 =
  27. 27.26 × 5 =
  28. 28.58 × 50 =
  29. 29.46 × 50 =
  30. 30.27 × 50 =
  31. 31.32 × 5 =
  32. 32.39 × 5 =
  33. 33.33 × 50 =
  34. 34.82 × 5 =
  35. 35.32 × 50 =
  36. 36.83 × 5 =
  37. 37.16 × 5 =
  38. 38.80 × 5 =
  39. 39.23 × 5 =
  40. 40.19 × 5 =

Answer key

  1. 4400
  2. 445
  3. 475
  4. 3800
  5. 130
  6. 105
  7. 170
  8. 285
  9. 600
  10. 375
  11. 145
  12. 4800
  13. 75
  14. 1150
  15. 1400
  16. 1450
  17. 450
  18. 1950
  19. 270
  20. 115
  21. 470
  22. 380
  23. 360
  24. 3700
  25. 950
  26. 485
  27. 130
  28. 2900
  29. 2300
  30. 1350
  31. 160
  32. 195
  33. 1650
  34. 410
  35. 1600
  36. 415
  37. 80
  38. 400
  39. 115
  40. 95

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