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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 165 · 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. 1.18 × 5 =
  2. 2.67 × 5 =
  3. 3.97 × 5 =
  4. 4.68 × 5 =
  5. 5.73 × 5 =
  6. 6.63 × 5 =
  7. 7.70 × 50 =
  8. 8.57 × 5 =
  9. 9.69 × 5 =
  10. 10.96 × 5 =
  11. 11.60 × 50 =
  12. 12.33 × 5 =
  13. 13.78 × 5 =
  14. 14.82 × 50 =
  15. 15.22 × 50 =
  16. 16.26 × 5 =
  17. 17.41 × 5 =
  18. 18.61 × 5 =
  19. 19.62 × 50 =
  20. 20.62 × 50 =
  21. 21.61 × 5 =
  22. 22.48 × 50 =
  23. 23.57 × 50 =
  24. 24.24 × 5 =
  25. 25.60 × 5 =
  26. 26.39 × 50 =
  27. 27.68 × 50 =
  28. 28.90 × 50 =
  29. 29.94 × 50 =
  30. 30.50 × 50 =
  31. 31.12 × 50 =
  32. 32.64 × 50 =
  33. 33.35 × 50 =
  34. 34.34 × 50 =
  35. 35.28 × 5 =
  36. 36.13 × 5 =
  37. 37.13 × 50 =
  38. 38.28 × 5 =
  39. 39.39 × 5 =
  40. 40.62 × 50 =

Answer key

  1. 90
  2. 335
  3. 485
  4. 340
  5. 365
  6. 315
  7. 3500
  8. 285
  9. 345
  10. 480
  11. 3000
  12. 165
  13. 390
  14. 4100
  15. 1100
  16. 130
  17. 205
  18. 305
  19. 3100
  20. 3100
  21. 305
  22. 2400
  23. 2850
  24. 120
  25. 300
  26. 1950
  27. 3400
  28. 4500
  29. 4700
  30. 2500
  31. 600
  32. 3200
  33. 1750
  34. 1700
  35. 140
  36. 65
  37. 650
  38. 140
  39. 195
  40. 3100

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