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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 894 · 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. 1.67 × 50 =
  2. 2.33 × 5 =
  3. 3.65 × 50 =
  4. 4.33 × 50 =
  5. 5.39 × 50 =
  6. 6.16 × 5 =
  7. 7.77 × 5 =
  8. 8.35 × 5 =
  9. 9.20 × 5 =
  10. 10.62 × 5 =
  11. 11.15 × 5 =
  12. 12.66 × 5 =
  13. 13.91 × 50 =
  14. 14.21 × 5 =
  15. 15.47 × 50 =
  16. 16.28 × 50 =
  17. 17.73 × 5 =
  18. 18.24 × 50 =
  19. 19.38 × 50 =
  20. 20.84 × 5 =
  21. 21.92 × 50 =
  22. 22.53 × 5 =
  23. 23.31 × 5 =
  24. 24.17 × 5 =
  25. 25.81 × 5 =
  26. 26.35 × 50 =
  27. 27.61 × 5 =
  28. 28.65 × 50 =
  29. 29.73 × 50 =
  30. 30.53 × 50 =
  31. 31.68 × 5 =
  32. 32.39 × 5 =
  33. 33.70 × 5 =
  34. 34.79 × 50 =
  35. 35.42 × 5 =
  36. 36.31 × 5 =
  37. 37.48 × 5 =
  38. 38.97 × 50 =
  39. 39.26 × 5 =
  40. 40.34 × 5 =

Answer key

  1. 3350
  2. 165
  3. 3250
  4. 1650
  5. 1950
  6. 80
  7. 385
  8. 175
  9. 100
  10. 310
  11. 75
  12. 330
  13. 4550
  14. 105
  15. 2350
  16. 1400
  17. 365
  18. 1200
  19. 1900
  20. 420
  21. 4600
  22. 265
  23. 155
  24. 85
  25. 405
  26. 1750
  27. 305
  28. 3250
  29. 3650
  30. 2650
  31. 340
  32. 195
  33. 350
  34. 3950
  35. 210
  36. 155
  37. 240
  38. 4850
  39. 130
  40. 170

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