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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 948 · 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. 1.48 × 50 =
  2. 2.12 × 50 =
  3. 3.43 × 5 =
  4. 4.75 × 5 =
  5. 5.54 × 50 =
  6. 6.30 × 5 =
  7. 7.46 × 5 =
  8. 8.39 × 5 =
  9. 9.68 × 50 =
  10. 10.30 × 50 =
  11. 11.49 × 5 =
  12. 12.68 × 50 =
  13. 13.35 × 5 =
  14. 14.77 × 50 =
  15. 15.75 × 5 =
  16. 16.73 × 5 =
  17. 17.79 × 50 =
  18. 18.90 × 50 =
  19. 19.92 × 50 =
  20. 20.43 × 5 =
  21. 21.76 × 50 =
  22. 22.70 × 5 =
  23. 23.52 × 50 =
  24. 24.38 × 5 =
  25. 25.95 × 5 =
  26. 26.61 × 50 =
  27. 27.17 × 50 =
  28. 28.47 × 5 =
  29. 29.17 × 5 =
  30. 30.81 × 50 =
  31. 31.27 × 5 =
  32. 32.96 × 5 =
  33. 33.98 × 50 =
  34. 34.50 × 5 =
  35. 35.58 × 5 =
  36. 36.68 × 50 =
  37. 37.35 × 5 =
  38. 38.87 × 5 =
  39. 39.90 × 5 =
  40. 40.34 × 5 =

Answer key

  1. 2400
  2. 600
  3. 215
  4. 375
  5. 2700
  6. 150
  7. 230
  8. 195
  9. 3400
  10. 1500
  11. 245
  12. 3400
  13. 175
  14. 3850
  15. 375
  16. 365
  17. 3950
  18. 4500
  19. 4600
  20. 215
  21. 3800
  22. 350
  23. 2600
  24. 190
  25. 475
  26. 3050
  27. 850
  28. 235
  29. 85
  30. 4050
  31. 135
  32. 480
  33. 4900
  34. 250
  35. 290
  36. 3400
  37. 175
  38. 435
  39. 450
  40. 170

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