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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 13 · 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. 2.97 × 5 =
  3. 3.36 × 50 =
  4. 4.53 × 5 =
  5. 5.47 × 5 =
  6. 6.95 × 5 =
  7. 7.74 × 50 =
  8. 8.64 × 5 =
  9. 9.15 × 5 =
  10. 10.35 × 50 =
  11. 11.13 × 5 =
  12. 12.76 × 50 =
  13. 13.36 × 50 =
  14. 14.63 × 5 =
  15. 15.15 × 50 =
  16. 16.25 × 50 =
  17. 17.13 × 5 =
  18. 18.29 × 5 =
  19. 19.22 × 50 =
  20. 20.26 × 50 =
  21. 21.74 × 50 =
  22. 22.58 × 50 =
  23. 23.51 × 5 =
  24. 24.62 × 50 =
  25. 25.13 × 50 =
  26. 26.34 × 5 =
  27. 27.78 × 50 =
  28. 28.76 × 50 =
  29. 29.86 × 50 =
  30. 30.60 × 50 =
  31. 31.71 × 50 =
  32. 32.18 × 50 =
  33. 33.94 × 5 =
  34. 34.13 × 50 =
  35. 35.65 × 5 =
  36. 36.30 × 5 =
  37. 37.21 × 50 =
  38. 38.69 × 5 =
  39. 39.50 × 5 =
  40. 40.53 × 50 =

Answer key

  1. 385
  2. 485
  3. 1800
  4. 265
  5. 235
  6. 475
  7. 3700
  8. 320
  9. 75
  10. 1750
  11. 65
  12. 3800
  13. 1800
  14. 315
  15. 750
  16. 1250
  17. 65
  18. 145
  19. 1100
  20. 1300
  21. 3700
  22. 2900
  23. 255
  24. 3100
  25. 650
  26. 170
  27. 3900
  28. 3800
  29. 4300
  30. 3000
  31. 3550
  32. 900
  33. 470
  34. 650
  35. 325
  36. 150
  37. 1050
  38. 345
  39. 250
  40. 2650

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