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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 293 · 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. 1.67 × 50 =
  2. 2.97 × 5 =
  3. 3.13 × 5 =
  4. 4.63 × 5 =
  5. 5.12 × 5 =
  6. 6.75 × 5 =
  7. 7.24 × 5 =
  8. 8.29 × 5 =
  9. 9.14 × 50 =
  10. 10.80 × 50 =
  11. 11.60 × 5 =
  12. 12.25 × 5 =
  13. 13.93 × 50 =
  14. 14.66 × 50 =
  15. 15.34 × 50 =
  16. 16.64 × 50 =
  17. 17.12 × 50 =
  18. 18.73 × 5 =
  19. 19.15 × 50 =
  20. 20.46 × 50 =
  21. 21.41 × 5 =
  22. 22.44 × 5 =
  23. 23.89 × 5 =
  24. 24.30 × 5 =
  25. 25.34 × 5 =
  26. 26.34 × 5 =
  27. 27.65 × 5 =
  28. 28.96 × 5 =
  29. 29.79 × 5 =
  30. 30.33 × 50 =
  31. 31.76 × 5 =
  32. 32.38 × 5 =
  33. 33.54 × 50 =
  34. 34.15 × 5 =
  35. 35.22 × 50 =
  36. 36.73 × 5 =
  37. 37.35 × 50 =
  38. 38.51 × 5 =
  39. 39.59 × 5 =
  40. 40.24 × 5 =

Answer key

  1. 3350
  2. 485
  3. 65
  4. 315
  5. 60
  6. 375
  7. 120
  8. 145
  9. 700
  10. 4000
  11. 300
  12. 125
  13. 4650
  14. 3300
  15. 1700
  16. 3200
  17. 600
  18. 365
  19. 750
  20. 2300
  21. 205
  22. 220
  23. 445
  24. 150
  25. 170
  26. 170
  27. 325
  28. 480
  29. 395
  30. 1650
  31. 380
  32. 190
  33. 2700
  34. 75
  35. 1100
  36. 365
  37. 1750
  38. 255
  39. 295
  40. 120

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