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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 62 · 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. 1.79 × 5 =
  2. 2.54 × 5 =
  3. 3.87 × 5 =
  4. 4.64 × 5 =
  5. 5.57 × 5 =
  6. 6.22 × 50 =
  7. 7.65 × 5 =
  8. 8.23 × 50 =
  9. 9.27 × 50 =
  10. 10.43 × 50 =
  11. 11.35 × 5 =
  12. 12.48 × 50 =
  13. 13.41 × 50 =
  14. 14.30 × 5 =
  15. 15.19 × 50 =
  16. 16.71 × 5 =
  17. 17.67 × 50 =
  18. 18.63 × 5 =
  19. 19.36 × 5 =
  20. 20.75 × 5 =
  21. 21.92 × 5 =
  22. 22.22 × 50 =
  23. 23.12 × 50 =
  24. 24.20 × 5 =
  25. 25.73 × 50 =
  26. 26.39 × 50 =
  27. 27.73 × 5 =
  28. 28.14 × 50 =
  29. 29.58 × 50 =
  30. 30.48 × 50 =
  31. 31.60 × 5 =
  32. 32.69 × 50 =
  33. 33.27 × 50 =
  34. 34.83 × 50 =
  35. 35.23 × 50 =
  36. 36.24 × 50 =
  37. 37.12 × 50 =
  38. 38.12 × 5 =
  39. 39.38 × 5 =
  40. 40.15 × 50 =

Answer key

  1. 395
  2. 270
  3. 435
  4. 320
  5. 285
  6. 1100
  7. 325
  8. 1150
  9. 1350
  10. 2150
  11. 175
  12. 2400
  13. 2050
  14. 150
  15. 950
  16. 355
  17. 3350
  18. 315
  19. 180
  20. 375
  21. 460
  22. 1100
  23. 600
  24. 100
  25. 3650
  26. 1950
  27. 365
  28. 700
  29. 2900
  30. 2400
  31. 300
  32. 3450
  33. 1350
  34. 4150
  35. 1150
  36. 1200
  37. 600
  38. 60
  39. 190
  40. 750

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