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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 684 · 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 × 50 =
  2. 2.24 × 5 =
  3. 3.98 × 5 =
  4. 4.40 × 50 =
  5. 5.92 × 50 =
  6. 6.64 × 50 =
  7. 7.22 × 5 =
  8. 8.92 × 5 =
  9. 9.36 × 5 =
  10. 10.12 × 50 =
  11. 11.71 × 50 =
  12. 12.22 × 5 =
  13. 13.65 × 5 =
  14. 14.84 × 50 =
  15. 15.77 × 5 =
  16. 16.88 × 50 =
  17. 17.32 × 5 =
  18. 18.17 × 50 =
  19. 19.43 × 5 =
  20. 20.23 × 50 =
  21. 21.64 × 50 =
  22. 22.71 × 5 =
  23. 23.33 × 50 =
  24. 24.40 × 5 =
  25. 25.51 × 5 =
  26. 26.31 × 50 =
  27. 27.50 × 50 =
  28. 28.85 × 50 =
  29. 29.16 × 5 =
  30. 30.98 × 5 =
  31. 31.14 × 50 =
  32. 32.38 × 5 =
  33. 33.49 × 50 =
  34. 34.73 × 5 =
  35. 35.67 × 50 =
  36. 36.16 × 50 =
  37. 37.72 × 5 =
  38. 38.27 × 5 =
  39. 39.36 × 5 =
  40. 40.80 × 50 =

Answer key

  1. 4200
  2. 120
  3. 490
  4. 2000
  5. 4600
  6. 3200
  7. 110
  8. 460
  9. 180
  10. 600
  11. 3550
  12. 110
  13. 325
  14. 4200
  15. 385
  16. 4400
  17. 160
  18. 850
  19. 215
  20. 1150
  21. 3200
  22. 355
  23. 1650
  24. 200
  25. 255
  26. 1550
  27. 2500
  28. 4250
  29. 80
  30. 490
  31. 700
  32. 190
  33. 2450
  34. 365
  35. 3350
  36. 800
  37. 360
  38. 135
  39. 180
  40. 4000

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