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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 432 · 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. 1.47 × 5 =
  2. 2.96 × 5 =
  3. 3.55 × 50 =
  4. 4.90 × 5 =
  5. 5.27 × 50 =
  6. 6.39 × 50 =
  7. 7.19 × 5 =
  8. 8.90 × 5 =
  9. 9.88 × 5 =
  10. 10.18 × 5 =
  11. 11.75 × 5 =
  12. 12.31 × 5 =
  13. 13.27 × 50 =
  14. 14.67 × 5 =
  15. 15.85 × 50 =
  16. 16.86 × 5 =
  17. 17.31 × 5 =
  18. 18.21 × 5 =
  19. 19.12 × 50 =
  20. 20.14 × 5 =
  21. 21.19 × 50 =
  22. 22.20 × 5 =
  23. 23.80 × 50 =
  24. 24.56 × 5 =
  25. 25.24 × 50 =
  26. 26.77 × 5 =
  27. 27.20 × 5 =
  28. 28.12 × 50 =
  29. 29.29 × 5 =
  30. 30.98 × 50 =
  31. 31.76 × 50 =
  32. 32.25 × 5 =
  33. 33.96 × 5 =
  34. 34.93 × 50 =
  35. 35.14 × 50 =
  36. 36.96 × 5 =
  37. 37.44 × 50 =
  38. 38.27 × 5 =
  39. 39.70 × 5 =
  40. 40.44 × 5 =

Answer key

  1. 235
  2. 480
  3. 2750
  4. 450
  5. 1350
  6. 1950
  7. 95
  8. 450
  9. 440
  10. 90
  11. 375
  12. 155
  13. 1350
  14. 335
  15. 4250
  16. 430
  17. 155
  18. 105
  19. 600
  20. 70
  21. 950
  22. 100
  23. 4000
  24. 280
  25. 1200
  26. 385
  27. 100
  28. 600
  29. 145
  30. 4900
  31. 3800
  32. 125
  33. 480
  34. 4650
  35. 700
  36. 480
  37. 2200
  38. 135
  39. 350
  40. 220

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