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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 828 · 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. 1.70 × 50 =
  2. 2.76 × 50 =
  3. 3.30 × 50 =
  4. 4.14 × 50 =
  5. 5.71 × 50 =
  6. 6.74 × 50 =
  7. 7.68 × 5 =
  8. 8.48 × 5 =
  9. 9.43 × 50 =
  10. 10.21 × 5 =
  11. 11.88 × 5 =
  12. 12.47 × 5 =
  13. 13.87 × 50 =
  14. 14.28 × 50 =
  15. 15.62 × 50 =
  16. 16.96 × 5 =
  17. 17.41 × 5 =
  18. 18.53 × 5 =
  19. 19.46 × 50 =
  20. 20.72 × 50 =
  21. 21.22 × 5 =
  22. 22.88 × 5 =
  23. 23.86 × 50 =
  24. 24.72 × 5 =
  25. 25.63 × 5 =
  26. 26.87 × 50 =
  27. 27.26 × 5 =
  28. 28.53 × 5 =
  29. 29.86 × 50 =
  30. 30.66 × 5 =
  31. 31.26 × 5 =
  32. 32.62 × 5 =
  33. 33.46 × 50 =
  34. 34.41 × 5 =
  35. 35.43 × 50 =
  36. 36.53 × 50 =
  37. 37.18 × 50 =
  38. 38.68 × 50 =
  39. 39.86 × 5 =
  40. 40.70 × 50 =

Answer key

  1. 3500
  2. 3800
  3. 1500
  4. 700
  5. 3550
  6. 3700
  7. 340
  8. 240
  9. 2150
  10. 105
  11. 440
  12. 235
  13. 4350
  14. 1400
  15. 3100
  16. 480
  17. 205
  18. 265
  19. 2300
  20. 3600
  21. 110
  22. 440
  23. 4300
  24. 360
  25. 315
  26. 4350
  27. 130
  28. 265
  29. 4300
  30. 330
  31. 130
  32. 310
  33. 2300
  34. 205
  35. 2150
  36. 2650
  37. 900
  38. 3400
  39. 430
  40. 3500

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