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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 826 · 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. 1.93 × 50 =
  2. 2.86 × 50 =
  3. 3.70 × 5 =
  4. 4.67 × 50 =
  5. 5.86 × 50 =
  6. 6.57 × 5 =
  7. 7.83 × 5 =
  8. 8.26 × 5 =
  9. 9.52 × 5 =
  10. 10.50 × 5 =
  11. 11.89 × 5 =
  12. 12.43 × 50 =
  13. 13.86 × 5 =
  14. 14.78 × 50 =
  15. 15.40 × 5 =
  16. 16.21 × 5 =
  17. 17.19 × 50 =
  18. 18.48 × 50 =
  19. 19.16 × 5 =
  20. 20.91 × 50 =
  21. 21.35 × 5 =
  22. 22.93 × 50 =
  23. 23.21 × 5 =
  24. 24.30 × 5 =
  25. 25.89 × 50 =
  26. 26.90 × 5 =
  27. 27.70 × 5 =
  28. 28.32 × 5 =
  29. 29.64 × 5 =
  30. 30.20 × 50 =
  31. 31.41 × 50 =
  32. 32.23 × 5 =
  33. 33.94 × 5 =
  34. 34.12 × 50 =
  35. 35.31 × 50 =
  36. 36.29 × 50 =
  37. 37.45 × 5 =
  38. 38.73 × 5 =
  39. 39.65 × 50 =
  40. 40.74 × 5 =

Answer key

  1. 4650
  2. 4300
  3. 350
  4. 3350
  5. 4300
  6. 285
  7. 415
  8. 130
  9. 260
  10. 250
  11. 445
  12. 2150
  13. 430
  14. 3900
  15. 200
  16. 105
  17. 950
  18. 2400
  19. 80
  20. 4550
  21. 175
  22. 4650
  23. 105
  24. 150
  25. 4450
  26. 450
  27. 350
  28. 160
  29. 320
  30. 1000
  31. 2050
  32. 115
  33. 470
  34. 600
  35. 1550
  36. 1450
  37. 225
  38. 365
  39. 3250
  40. 370

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