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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 537 · 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. 1.62 × 50 =
  2. 2.37 × 50 =
  3. 3.29 × 50 =
  4. 4.31 × 50 =
  5. 5.64 × 5 =
  6. 6.28 × 5 =
  7. 7.29 × 50 =
  8. 8.67 × 5 =
  9. 9.44 × 5 =
  10. 10.96 × 5 =
  11. 11.62 × 5 =
  12. 12.95 × 5 =
  13. 13.14 × 50 =
  14. 14.48 × 5 =
  15. 15.16 × 50 =
  16. 16.74 × 5 =
  17. 17.12 × 5 =
  18. 18.62 × 5 =
  19. 19.43 × 5 =
  20. 20.89 × 5 =
  21. 21.72 × 50 =
  22. 22.68 × 5 =
  23. 23.29 × 5 =
  24. 24.75 × 5 =
  25. 25.35 × 50 =
  26. 26.89 × 50 =
  27. 27.55 × 50 =
  28. 28.40 × 50 =
  29. 29.24 × 50 =
  30. 30.16 × 50 =
  31. 31.32 × 5 =
  32. 32.79 × 50 =
  33. 33.17 × 50 =
  34. 34.61 × 5 =
  35. 35.20 × 5 =
  36. 36.98 × 5 =
  37. 37.46 × 5 =
  38. 38.81 × 5 =
  39. 39.95 × 50 =
  40. 40.89 × 5 =

Answer key

  1. 3100
  2. 1850
  3. 1450
  4. 1550
  5. 320
  6. 140
  7. 1450
  8. 335
  9. 220
  10. 480
  11. 310
  12. 475
  13. 700
  14. 240
  15. 800
  16. 370
  17. 60
  18. 310
  19. 215
  20. 445
  21. 3600
  22. 340
  23. 145
  24. 375
  25. 1750
  26. 4450
  27. 2750
  28. 2000
  29. 1200
  30. 800
  31. 160
  32. 3950
  33. 850
  34. 305
  35. 100
  36. 490
  37. 230
  38. 405
  39. 4750
  40. 445

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