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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 538 · 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 × 50 =
  2. 2.28 × 50 =
  3. 3.60 × 5 =
  4. 4.80 × 5 =
  5. 5.32 × 50 =
  6. 6.55 × 5 =
  7. 7.79 × 5 =
  8. 8.77 × 5 =
  9. 9.43 × 5 =
  10. 10.97 × 5 =
  11. 11.19 × 5 =
  12. 12.59 × 50 =
  13. 13.69 × 5 =
  14. 14.33 × 50 =
  15. 15.95 × 5 =
  16. 16.18 × 5 =
  17. 17.16 × 5 =
  18. 18.78 × 5 =
  19. 19.76 × 5 =
  20. 20.37 × 50 =
  21. 21.89 × 5 =
  22. 22.61 × 5 =
  23. 23.93 × 5 =
  24. 24.46 × 5 =
  25. 25.51 × 5 =
  26. 26.58 × 50 =
  27. 27.17 × 5 =
  28. 28.72 × 5 =
  29. 29.68 × 50 =
  30. 30.57 × 50 =
  31. 31.20 × 5 =
  32. 32.68 × 50 =
  33. 33.46 × 5 =
  34. 34.66 × 5 =
  35. 35.13 × 50 =
  36. 36.36 × 50 =
  37. 37.31 × 5 =
  38. 38.94 × 5 =
  39. 39.87 × 5 =
  40. 40.91 × 50 =

Answer key

  1. 3850
  2. 1400
  3. 300
  4. 400
  5. 1600
  6. 275
  7. 395
  8. 385
  9. 215
  10. 485
  11. 95
  12. 2950
  13. 345
  14. 1650
  15. 475
  16. 90
  17. 80
  18. 390
  19. 380
  20. 1850
  21. 445
  22. 305
  23. 465
  24. 230
  25. 255
  26. 2900
  27. 85
  28. 360
  29. 3400
  30. 2850
  31. 100
  32. 3400
  33. 230
  34. 330
  35. 650
  36. 1800
  37. 155
  38. 470
  39. 435
  40. 4550

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