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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 145 · 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. 1.26 × 50 =
  2. 2.50 × 5 =
  3. 3.52 × 50 =
  4. 4.96 × 50 =
  5. 5.76 × 5 =
  6. 6.79 × 50 =
  7. 7.89 × 5 =
  8. 8.74 × 5 =
  9. 9.14 × 5 =
  10. 10.15 × 5 =
  11. 11.56 × 5 =
  12. 12.24 × 50 =
  13. 13.30 × 50 =
  14. 14.83 × 50 =
  15. 15.56 × 5 =
  16. 16.58 × 50 =
  17. 17.65 × 5 =
  18. 18.13 × 5 =
  19. 19.33 × 5 =
  20. 20.68 × 5 =
  21. 21.79 × 50 =
  22. 22.30 × 5 =
  23. 23.39 × 5 =
  24. 24.21 × 50 =
  25. 25.75 × 50 =
  26. 26.57 × 5 =
  27. 27.71 × 5 =
  28. 28.47 × 5 =
  29. 29.92 × 50 =
  30. 30.61 × 5 =
  31. 31.73 × 5 =
  32. 32.41 × 50 =
  33. 33.28 × 50 =
  34. 34.89 × 5 =
  35. 35.77 × 5 =
  36. 36.98 × 50 =
  37. 37.38 × 5 =
  38. 38.69 × 5 =
  39. 39.15 × 50 =
  40. 40.12 × 50 =

Answer key

  1. 1300
  2. 250
  3. 2600
  4. 4800
  5. 380
  6. 3950
  7. 445
  8. 370
  9. 70
  10. 75
  11. 280
  12. 1200
  13. 1500
  14. 4150
  15. 280
  16. 2900
  17. 325
  18. 65
  19. 165
  20. 340
  21. 3950
  22. 150
  23. 195
  24. 1050
  25. 3750
  26. 285
  27. 355
  28. 235
  29. 4600
  30. 305
  31. 365
  32. 2050
  33. 1400
  34. 445
  35. 385
  36. 4900
  37. 190
  38. 345
  39. 750
  40. 600

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