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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 199 · 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. 1.77 × 5 =
  2. 2.13 × 50 =
  3. 3.68 × 50 =
  4. 4.34 × 50 =
  5. 5.82 × 50 =
  6. 6.51 × 50 =
  7. 7.91 × 50 =
  8. 8.44 × 50 =
  9. 9.72 × 5 =
  10. 10.58 × 50 =
  11. 11.68 × 5 =
  12. 12.49 × 50 =
  13. 13.52 × 50 =
  14. 14.61 × 50 =
  15. 15.94 × 5 =
  16. 16.81 × 5 =
  17. 17.24 × 50 =
  18. 18.86 × 5 =
  19. 19.68 × 5 =
  20. 20.19 × 5 =
  21. 21.39 × 50 =
  22. 22.30 × 5 =
  23. 23.21 × 50 =
  24. 24.39 × 5 =
  25. 25.79 × 50 =
  26. 26.23 × 50 =
  27. 27.67 × 50 =
  28. 28.66 × 50 =
  29. 29.69 × 5 =
  30. 30.20 × 50 =
  31. 31.57 × 5 =
  32. 32.83 × 50 =
  33. 33.12 × 50 =
  34. 34.25 × 5 =
  35. 35.39 × 50 =
  36. 36.55 × 5 =
  37. 37.64 × 5 =
  38. 38.12 × 5 =
  39. 39.73 × 5 =
  40. 40.57 × 5 =

Answer key

  1. 385
  2. 650
  3. 3400
  4. 1700
  5. 4100
  6. 2550
  7. 4550
  8. 2200
  9. 360
  10. 2900
  11. 340
  12. 2450
  13. 2600
  14. 3050
  15. 470
  16. 405
  17. 1200
  18. 430
  19. 340
  20. 95
  21. 1950
  22. 150
  23. 1050
  24. 195
  25. 3950
  26. 1150
  27. 3350
  28. 3300
  29. 345
  30. 1000
  31. 285
  32. 4150
  33. 600
  34. 125
  35. 1950
  36. 275
  37. 320
  38. 60
  39. 365
  40. 285

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