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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 469 · 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. 1.84 × 5 =
  2. 2.37 × 5 =
  3. 3.40 × 5 =
  4. 4.49 × 5 =
  5. 5.19 × 5 =
  6. 6.71 × 5 =
  7. 7.27 × 50 =
  8. 8.54 × 5 =
  9. 9.13 × 5 =
  10. 10.62 × 50 =
  11. 11.43 × 50 =
  12. 12.32 × 5 =
  13. 13.86 × 5 =
  14. 14.69 × 50 =
  15. 15.52 × 50 =
  16. 16.80 × 5 =
  17. 17.89 × 5 =
  18. 18.93 × 5 =
  19. 19.50 × 5 =
  20. 20.14 × 50 =
  21. 21.90 × 5 =
  22. 22.89 × 50 =
  23. 23.93 × 5 =
  24. 24.94 × 5 =
  25. 25.21 × 5 =
  26. 26.81 × 50 =
  27. 27.24 × 50 =
  28. 28.51 × 50 =
  29. 29.12 × 50 =
  30. 30.92 × 5 =
  31. 31.13 × 5 =
  32. 32.49 × 50 =
  33. 33.96 × 50 =
  34. 34.13 × 50 =
  35. 35.15 × 5 =
  36. 36.81 × 5 =
  37. 37.68 × 5 =
  38. 38.77 × 5 =
  39. 39.22 × 50 =
  40. 40.39 × 5 =

Answer key

  1. 420
  2. 185
  3. 200
  4. 245
  5. 95
  6. 355
  7. 1350
  8. 270
  9. 65
  10. 3100
  11. 2150
  12. 160
  13. 430
  14. 3450
  15. 2600
  16. 400
  17. 445
  18. 465
  19. 250
  20. 700
  21. 450
  22. 4450
  23. 465
  24. 470
  25. 105
  26. 4050
  27. 1200
  28. 2550
  29. 600
  30. 460
  31. 65
  32. 2450
  33. 4800
  34. 650
  35. 75
  36. 405
  37. 340
  38. 385
  39. 1100
  40. 195

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