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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 508 · 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. 1.61 × 5 =
  2. 2.78 × 5 =
  3. 3.21 × 50 =
  4. 4.30 × 50 =
  5. 5.92 × 5 =
  6. 6.60 × 50 =
  7. 7.91 × 50 =
  8. 8.89 × 5 =
  9. 9.36 × 5 =
  10. 10.39 × 5 =
  11. 11.22 × 50 =
  12. 12.39 × 5 =
  13. 13.21 × 5 =
  14. 14.38 × 50 =
  15. 15.48 × 5 =
  16. 16.28 × 50 =
  17. 17.49 × 50 =
  18. 18.75 × 50 =
  19. 19.34 × 5 =
  20. 20.69 × 50 =
  21. 21.92 × 50 =
  22. 22.64 × 50 =
  23. 23.82 × 50 =
  24. 24.15 × 5 =
  25. 25.88 × 50 =
  26. 26.46 × 5 =
  27. 27.73 × 50 =
  28. 28.62 × 5 =
  29. 29.30 × 50 =
  30. 30.74 × 5 =
  31. 31.40 × 5 =
  32. 32.34 × 5 =
  33. 33.57 × 5 =
  34. 34.65 × 5 =
  35. 35.42 × 5 =
  36. 36.18 × 5 =
  37. 37.77 × 50 =
  38. 38.13 × 5 =
  39. 39.14 × 50 =
  40. 40.58 × 5 =

Answer key

  1. 305
  2. 390
  3. 1050
  4. 1500
  5. 460
  6. 3000
  7. 4550
  8. 445
  9. 180
  10. 195
  11. 1100
  12. 195
  13. 105
  14. 1900
  15. 240
  16. 1400
  17. 2450
  18. 3750
  19. 170
  20. 3450
  21. 4600
  22. 3200
  23. 4100
  24. 75
  25. 4400
  26. 230
  27. 3650
  28. 310
  29. 1500
  30. 370
  31. 200
  32. 170
  33. 285
  34. 325
  35. 210
  36. 90
  37. 3850
  38. 65
  39. 700
  40. 290

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