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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 285 · 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. 1.19 × 50 =
  2. 2.37 × 50 =
  3. 3.88 × 50 =
  4. 4.35 × 5 =
  5. 5.23 × 5 =
  6. 6.52 × 5 =
  7. 7.22 × 5 =
  8. 8.55 × 5 =
  9. 9.23 × 5 =
  10. 10.55 × 5 =
  11. 11.76 × 50 =
  12. 12.96 × 5 =
  13. 13.92 × 50 =
  14. 14.16 × 5 =
  15. 15.16 × 50 =
  16. 16.13 × 5 =
  17. 17.63 × 5 =
  18. 18.22 × 50 =
  19. 19.92 × 5 =
  20. 20.65 × 50 =
  21. 21.53 × 50 =
  22. 22.14 × 50 =
  23. 23.28 × 50 =
  24. 24.52 × 5 =
  25. 25.34 × 50 =
  26. 26.91 × 5 =
  27. 27.32 × 5 =
  28. 28.40 × 50 =
  29. 29.60 × 50 =
  30. 30.47 × 5 =
  31. 31.72 × 50 =
  32. 32.19 × 50 =
  33. 33.23 × 5 =
  34. 34.29 × 5 =
  35. 35.22 × 50 =
  36. 36.31 × 50 =
  37. 37.36 × 5 =
  38. 38.65 × 5 =
  39. 39.61 × 50 =
  40. 40.97 × 50 =

Answer key

  1. 950
  2. 1850
  3. 4400
  4. 175
  5. 115
  6. 260
  7. 110
  8. 275
  9. 115
  10. 275
  11. 3800
  12. 480
  13. 4600
  14. 80
  15. 800
  16. 65
  17. 315
  18. 1100
  19. 460
  20. 3250
  21. 2650
  22. 700
  23. 1400
  24. 260
  25. 1700
  26. 455
  27. 160
  28. 2000
  29. 3000
  30. 235
  31. 3600
  32. 950
  33. 115
  34. 145
  35. 1100
  36. 1550
  37. 180
  38. 325
  39. 3050
  40. 4850

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