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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 823 · 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. 1.43 × 5 =
  2. 2.63 × 5 =
  3. 3.72 × 50 =
  4. 4.59 × 5 =
  5. 5.36 × 5 =
  6. 6.12 × 50 =
  7. 7.93 × 5 =
  8. 8.38 × 5 =
  9. 9.86 × 50 =
  10. 10.16 × 5 =
  11. 11.13 × 5 =
  12. 12.62 × 5 =
  13. 13.32 × 5 =
  14. 14.24 × 50 =
  15. 15.21 × 50 =
  16. 16.65 × 50 =
  17. 17.40 × 50 =
  18. 18.46 × 5 =
  19. 19.78 × 5 =
  20. 20.91 × 5 =
  21. 21.55 × 50 =
  22. 22.15 × 5 =
  23. 23.67 × 50 =
  24. 24.82 × 50 =
  25. 25.54 × 50 =
  26. 26.17 × 5 =
  27. 27.17 × 50 =
  28. 28.37 × 5 =
  29. 29.14 × 50 =
  30. 30.27 × 5 =
  31. 31.29 × 5 =
  32. 32.21 × 5 =
  33. 33.75 × 5 =
  34. 34.34 × 50 =
  35. 35.62 × 5 =
  36. 36.23 × 5 =
  37. 37.65 × 50 =
  38. 38.33 × 50 =
  39. 39.36 × 5 =
  40. 40.32 × 50 =

Answer key

  1. 215
  2. 315
  3. 3600
  4. 295
  5. 180
  6. 600
  7. 465
  8. 190
  9. 4300
  10. 80
  11. 65
  12. 310
  13. 160
  14. 1200
  15. 1050
  16. 3250
  17. 2000
  18. 230
  19. 390
  20. 455
  21. 2750
  22. 75
  23. 3350
  24. 4100
  25. 2700
  26. 85
  27. 850
  28. 185
  29. 700
  30. 135
  31. 145
  32. 105
  33. 375
  34. 1700
  35. 310
  36. 115
  37. 3250
  38. 1650
  39. 180
  40. 1600

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