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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 783 · 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. 1.91 × 50 =
  2. 2.90 × 50 =
  3. 3.64 × 5 =
  4. 4.22 × 5 =
  5. 5.91 × 5 =
  6. 6.37 × 50 =
  7. 7.91 × 50 =
  8. 8.47 × 50 =
  9. 9.73 × 50 =
  10. 10.75 × 50 =
  11. 11.86 × 50 =
  12. 12.59 × 50 =
  13. 13.49 × 50 =
  14. 14.21 × 5 =
  15. 15.98 × 5 =
  16. 16.64 × 50 =
  17. 17.15 × 5 =
  18. 18.35 × 50 =
  19. 19.91 × 5 =
  20. 20.65 × 50 =
  21. 21.71 × 50 =
  22. 22.24 × 5 =
  23. 23.68 × 5 =
  24. 24.12 × 50 =
  25. 25.94 × 50 =
  26. 26.60 × 5 =
  27. 27.30 × 5 =
  28. 28.62 × 5 =
  29. 29.47 × 5 =
  30. 30.15 × 5 =
  31. 31.38 × 50 =
  32. 32.54 × 5 =
  33. 33.91 × 50 =
  34. 34.17 × 50 =
  35. 35.39 × 50 =
  36. 36.74 × 5 =
  37. 37.15 × 50 =
  38. 38.16 × 50 =
  39. 39.68 × 50 =
  40. 40.32 × 5 =

Answer key

  1. 4550
  2. 4500
  3. 320
  4. 110
  5. 455
  6. 1850
  7. 4550
  8. 2350
  9. 3650
  10. 3750
  11. 4300
  12. 2950
  13. 2450
  14. 105
  15. 490
  16. 3200
  17. 75
  18. 1750
  19. 455
  20. 3250
  21. 3550
  22. 120
  23. 340
  24. 600
  25. 4700
  26. 300
  27. 150
  28. 310
  29. 235
  30. 75
  31. 1900
  32. 270
  33. 4550
  34. 850
  35. 1950
  36. 370
  37. 750
  38. 800
  39. 3400
  40. 160

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