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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 872 · 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. 1.44 × 5 =
  2. 2.21 × 5 =
  3. 3.72 × 5 =
  4. 4.17 × 50 =
  5. 5.88 × 50 =
  6. 6.79 × 5 =
  7. 7.47 × 5 =
  8. 8.95 × 50 =
  9. 9.66 × 50 =
  10. 10.30 × 5 =
  11. 11.45 × 50 =
  12. 12.98 × 5 =
  13. 13.90 × 5 =
  14. 14.38 × 50 =
  15. 15.64 × 50 =
  16. 16.18 × 50 =
  17. 17.79 × 5 =
  18. 18.93 × 50 =
  19. 19.36 × 5 =
  20. 20.40 × 5 =
  21. 21.62 × 50 =
  22. 22.84 × 5 =
  23. 23.34 × 5 =
  24. 24.88 × 5 =
  25. 25.81 × 5 =
  26. 26.72 × 5 =
  27. 27.56 × 50 =
  28. 28.23 × 50 =
  29. 29.33 × 5 =
  30. 30.59 × 50 =
  31. 31.44 × 5 =
  32. 32.80 × 5 =
  33. 33.29 × 50 =
  34. 34.14 × 50 =
  35. 35.39 × 50 =
  36. 36.91 × 50 =
  37. 37.75 × 50 =
  38. 38.34 × 5 =
  39. 39.39 × 5 =
  40. 40.61 × 50 =

Answer key

  1. 220
  2. 105
  3. 360
  4. 850
  5. 4400
  6. 395
  7. 235
  8. 4750
  9. 3300
  10. 150
  11. 2250
  12. 490
  13. 450
  14. 1900
  15. 3200
  16. 900
  17. 395
  18. 4650
  19. 180
  20. 200
  21. 3100
  22. 420
  23. 170
  24. 440
  25. 405
  26. 360
  27. 2800
  28. 1150
  29. 165
  30. 2950
  31. 220
  32. 400
  33. 1450
  34. 700
  35. 1950
  36. 4550
  37. 3750
  38. 170
  39. 195
  40. 3050

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