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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 151 · 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. 1.73 × 50 =
  2. 2.77 × 5 =
  3. 3.36 × 5 =
  4. 4.39 × 5 =
  5. 5.18 × 50 =
  6. 6.20 × 50 =
  7. 7.91 × 50 =
  8. 8.98 × 5 =
  9. 9.30 × 5 =
  10. 10.93 × 5 =
  11. 11.53 × 50 =
  12. 12.47 × 5 =
  13. 13.14 × 5 =
  14. 14.23 × 5 =
  15. 15.85 × 50 =
  16. 16.25 × 5 =
  17. 17.20 × 5 =
  18. 18.87 × 5 =
  19. 19.30 × 5 =
  20. 20.84 × 50 =
  21. 21.27 × 5 =
  22. 22.31 × 50 =
  23. 23.12 × 50 =
  24. 24.31 × 5 =
  25. 25.86 × 50 =
  26. 26.78 × 5 =
  27. 27.17 × 50 =
  28. 28.12 × 5 =
  29. 29.24 × 5 =
  30. 30.59 × 5 =
  31. 31.93 × 50 =
  32. 32.37 × 50 =
  33. 33.19 × 50 =
  34. 34.76 × 50 =
  35. 35.47 × 50 =
  36. 36.88 × 50 =
  37. 37.37 × 50 =
  38. 38.45 × 50 =
  39. 39.29 × 5 =
  40. 40.22 × 5 =

Answer key

  1. 3650
  2. 385
  3. 180
  4. 195
  5. 900
  6. 1000
  7. 4550
  8. 490
  9. 150
  10. 465
  11. 2650
  12. 235
  13. 70
  14. 115
  15. 4250
  16. 125
  17. 100
  18. 435
  19. 150
  20. 4200
  21. 135
  22. 1550
  23. 600
  24. 155
  25. 4300
  26. 390
  27. 850
  28. 60
  29. 120
  30. 295
  31. 4650
  32. 1850
  33. 950
  34. 3800
  35. 2350
  36. 4400
  37. 1850
  38. 2250
  39. 145
  40. 110

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