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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 699 · 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. 1.27 × 5 =
  2. 2.70 × 50 =
  3. 3.78 × 5 =
  4. 4.12 × 50 =
  5. 5.88 × 5 =
  6. 6.15 × 5 =
  7. 7.96 × 5 =
  8. 8.22 × 50 =
  9. 9.19 × 5 =
  10. 10.70 × 5 =
  11. 11.20 × 50 =
  12. 12.85 × 5 =
  13. 13.81 × 5 =
  14. 14.14 × 5 =
  15. 15.93 × 5 =
  16. 16.74 × 5 =
  17. 17.39 × 5 =
  18. 18.19 × 5 =
  19. 19.45 × 50 =
  20. 20.35 × 5 =
  21. 21.59 × 50 =
  22. 22.43 × 5 =
  23. 23.91 × 50 =
  24. 24.71 × 5 =
  25. 25.64 × 5 =
  26. 26.20 × 5 =
  27. 27.73 × 5 =
  28. 28.23 × 50 =
  29. 29.13 × 50 =
  30. 30.67 × 50 =
  31. 31.30 × 50 =
  32. 32.55 × 50 =
  33. 33.92 × 5 =
  34. 34.70 × 5 =
  35. 35.65 × 50 =
  36. 36.31 × 5 =
  37. 37.86 × 50 =
  38. 38.45 × 50 =
  39. 39.13 × 5 =
  40. 40.80 × 50 =

Answer key

  1. 135
  2. 3500
  3. 390
  4. 600
  5. 440
  6. 75
  7. 480
  8. 1100
  9. 95
  10. 350
  11. 1000
  12. 425
  13. 405
  14. 70
  15. 465
  16. 370
  17. 195
  18. 95
  19. 2250
  20. 175
  21. 2950
  22. 215
  23. 4550
  24. 355
  25. 320
  26. 100
  27. 365
  28. 1150
  29. 650
  30. 3350
  31. 1500
  32. 2750
  33. 460
  34. 350
  35. 3250
  36. 155
  37. 4300
  38. 2250
  39. 65
  40. 4000

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