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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 910 · 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. 1.53 × 5 =
  2. 2.65 × 50 =
  3. 3.49 × 5 =
  4. 4.87 × 50 =
  5. 5.63 × 50 =
  6. 6.26 × 50 =
  7. 7.71 × 50 =
  8. 8.14 × 5 =
  9. 9.57 × 5 =
  10. 10.84 × 5 =
  11. 11.33 × 50 =
  12. 12.23 × 5 =
  13. 13.61 × 5 =
  14. 14.87 × 5 =
  15. 15.55 × 50 =
  16. 16.90 × 5 =
  17. 17.83 × 5 =
  18. 18.15 × 50 =
  19. 19.66 × 50 =
  20. 20.51 × 5 =
  21. 21.20 × 5 =
  22. 22.94 × 5 =
  23. 23.53 × 5 =
  24. 24.85 × 50 =
  25. 25.18 × 5 =
  26. 26.35 × 5 =
  27. 27.63 × 5 =
  28. 28.76 × 5 =
  29. 29.81 × 5 =
  30. 30.23 × 50 =
  31. 31.33 × 5 =
  32. 32.21 × 5 =
  33. 33.33 × 50 =
  34. 34.80 × 5 =
  35. 35.39 × 5 =
  36. 36.76 × 5 =
  37. 37.49 × 50 =
  38. 38.85 × 50 =
  39. 39.62 × 5 =
  40. 40.76 × 50 =

Answer key

  1. 265
  2. 3250
  3. 245
  4. 4350
  5. 3150
  6. 1300
  7. 3550
  8. 70
  9. 285
  10. 420
  11. 1650
  12. 115
  13. 305
  14. 435
  15. 2750
  16. 450
  17. 415
  18. 750
  19. 3300
  20. 255
  21. 100
  22. 470
  23. 265
  24. 4250
  25. 90
  26. 175
  27. 315
  28. 380
  29. 405
  30. 1150
  31. 165
  32. 105
  33. 1650
  34. 400
  35. 195
  36. 380
  37. 2450
  38. 4250
  39. 310
  40. 3800

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