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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 357 · 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. 1.76 × 50 =
  2. 2.21 × 5 =
  3. 3.12 × 5 =
  4. 4.49 × 50 =
  5. 5.97 × 50 =
  6. 6.79 × 50 =
  7. 7.15 × 50 =
  8. 8.24 × 50 =
  9. 9.65 × 5 =
  10. 10.13 × 50 =
  11. 11.65 × 50 =
  12. 12.19 × 50 =
  13. 13.90 × 5 =
  14. 14.80 × 5 =
  15. 15.23 × 5 =
  16. 16.19 × 50 =
  17. 17.48 × 5 =
  18. 18.73 × 5 =
  19. 19.94 × 5 =
  20. 20.45 × 50 =
  21. 21.68 × 5 =
  22. 22.24 × 5 =
  23. 23.52 × 5 =
  24. 24.39 × 50 =
  25. 25.60 × 5 =
  26. 26.40 × 50 =
  27. 27.41 × 50 =
  28. 28.82 × 5 =
  29. 29.74 × 50 =
  30. 30.61 × 5 =
  31. 31.16 × 50 =
  32. 32.54 × 50 =
  33. 33.31 × 5 =
  34. 34.87 × 5 =
  35. 35.86 × 50 =
  36. 36.87 × 5 =
  37. 37.50 × 5 =
  38. 38.64 × 5 =
  39. 39.62 × 50 =
  40. 40.34 × 50 =

Answer key

  1. 3800
  2. 105
  3. 60
  4. 2450
  5. 4850
  6. 3950
  7. 750
  8. 1200
  9. 325
  10. 650
  11. 3250
  12. 950
  13. 450
  14. 400
  15. 115
  16. 950
  17. 240
  18. 365
  19. 470
  20. 2250
  21. 340
  22. 120
  23. 260
  24. 1950
  25. 300
  26. 2000
  27. 2050
  28. 410
  29. 3700
  30. 305
  31. 800
  32. 2700
  33. 155
  34. 435
  35. 4300
  36. 435
  37. 250
  38. 320
  39. 3100
  40. 1700

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