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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 962 · 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 × 50 =
  2. 2.15 × 50 =
  3. 3.69 × 5 =
  4. 4.81 × 50 =
  5. 5.63 × 5 =
  6. 6.63 × 5 =
  7. 7.31 × 5 =
  8. 8.24 × 5 =
  9. 9.48 × 5 =
  10. 10.94 × 5 =
  11. 11.19 × 5 =
  12. 12.12 × 5 =
  13. 13.83 × 5 =
  14. 14.70 × 50 =
  15. 15.52 × 5 =
  16. 16.20 × 50 =
  17. 17.53 × 5 =
  18. 18.55 × 50 =
  19. 19.59 × 5 =
  20. 20.23 × 5 =
  21. 21.88 × 50 =
  22. 22.57 × 50 =
  23. 23.49 × 50 =
  24. 24.20 × 5 =
  25. 25.18 × 5 =
  26. 26.64 × 50 =
  27. 27.73 × 5 =
  28. 28.36 × 50 =
  29. 29.35 × 50 =
  30. 30.32 × 5 =
  31. 31.51 × 50 =
  32. 32.74 × 5 =
  33. 33.65 × 5 =
  34. 34.30 × 50 =
  35. 35.61 × 50 =
  36. 36.13 × 5 =
  37. 37.19 × 50 =
  38. 38.76 × 5 =
  39. 39.16 × 5 =
  40. 40.39 × 5 =

Answer key

  1. 650
  2. 750
  3. 345
  4. 4050
  5. 315
  6. 315
  7. 155
  8. 120
  9. 240
  10. 470
  11. 95
  12. 60
  13. 415
  14. 3500
  15. 260
  16. 1000
  17. 265
  18. 2750
  19. 295
  20. 115
  21. 4400
  22. 2850
  23. 2450
  24. 100
  25. 90
  26. 3200
  27. 365
  28. 1800
  29. 1750
  30. 160
  31. 2550
  32. 370
  33. 325
  34. 1500
  35. 3050
  36. 65
  37. 950
  38. 380
  39. 80
  40. 195

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