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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 857 · 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. 1.94 × 5 =
  2. 2.13 × 50 =
  3. 3.53 × 5 =
  4. 4.97 × 50 =
  5. 5.35 × 5 =
  6. 6.67 × 5 =
  7. 7.87 × 5 =
  8. 8.31 × 5 =
  9. 9.26 × 50 =
  10. 10.64 × 50 =
  11. 11.61 × 5 =
  12. 12.21 × 50 =
  13. 13.52 × 50 =
  14. 14.72 × 50 =
  15. 15.45 × 5 =
  16. 16.20 × 5 =
  17. 17.90 × 5 =
  18. 18.34 × 50 =
  19. 19.76 × 5 =
  20. 20.43 × 50 =
  21. 21.85 × 5 =
  22. 22.68 × 50 =
  23. 23.75 × 50 =
  24. 24.25 × 50 =
  25. 25.75 × 5 =
  26. 26.59 × 50 =
  27. 27.24 × 5 =
  28. 28.75 × 5 =
  29. 29.20 × 5 =
  30. 30.26 × 5 =
  31. 31.87 × 5 =
  32. 32.12 × 50 =
  33. 33.29 × 50 =
  34. 34.75 × 50 =
  35. 35.13 × 50 =
  36. 36.49 × 50 =
  37. 37.85 × 50 =
  38. 38.87 × 5 =
  39. 39.88 × 50 =
  40. 40.52 × 50 =

Answer key

  1. 470
  2. 650
  3. 265
  4. 4850
  5. 175
  6. 335
  7. 435
  8. 155
  9. 1300
  10. 3200
  11. 305
  12. 1050
  13. 2600
  14. 3600
  15. 225
  16. 100
  17. 450
  18. 1700
  19. 380
  20. 2150
  21. 425
  22. 3400
  23. 3750
  24. 1250
  25. 375
  26. 2950
  27. 120
  28. 375
  29. 100
  30. 130
  31. 435
  32. 600
  33. 1450
  34. 3750
  35. 650
  36. 2450
  37. 4250
  38. 435
  39. 4400
  40. 2600

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