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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 932 · 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. 1.19 × 5 =
  2. 2.37 × 50 =
  3. 3.30 × 5 =
  4. 4.13 × 50 =
  5. 5.17 × 5 =
  6. 6.30 × 50 =
  7. 7.13 × 50 =
  8. 8.40 × 50 =
  9. 9.88 × 50 =
  10. 10.28 × 5 =
  11. 11.52 × 50 =
  12. 12.63 × 5 =
  13. 13.23 × 5 =
  14. 14.58 × 50 =
  15. 15.43 × 5 =
  16. 16.35 × 50 =
  17. 17.63 × 50 =
  18. 18.52 × 50 =
  19. 19.49 × 5 =
  20. 20.69 × 5 =
  21. 21.49 × 50 =
  22. 22.62 × 50 =
  23. 23.22 × 50 =
  24. 24.17 × 50 =
  25. 25.28 × 50 =
  26. 26.57 × 5 =
  27. 27.96 × 5 =
  28. 28.19 × 50 =
  29. 29.90 × 50 =
  30. 30.53 × 5 =
  31. 31.40 × 50 =
  32. 32.39 × 5 =
  33. 33.29 × 50 =
  34. 34.70 × 50 =
  35. 35.75 × 50 =
  36. 36.91 × 5 =
  37. 37.16 × 5 =
  38. 38.47 × 5 =
  39. 39.79 × 50 =
  40. 40.15 × 50 =

Answer key

  1. 95
  2. 1850
  3. 150
  4. 650
  5. 85
  6. 1500
  7. 650
  8. 2000
  9. 4400
  10. 140
  11. 2600
  12. 315
  13. 115
  14. 2900
  15. 215
  16. 1750
  17. 3150
  18. 2600
  19. 245
  20. 345
  21. 2450
  22. 3100
  23. 1100
  24. 850
  25. 1400
  26. 285
  27. 480
  28. 950
  29. 4500
  30. 265
  31. 2000
  32. 195
  33. 1450
  34. 3500
  35. 3750
  36. 455
  37. 80
  38. 235
  39. 3950
  40. 750

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