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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 693 · 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. 1.21 × 50 =
  2. 2.37 × 5 =
  3. 3.24 × 5 =
  4. 4.14 × 5 =
  5. 5.71 × 50 =
  6. 6.77 × 5 =
  7. 7.64 × 5 =
  8. 8.23 × 5 =
  9. 9.66 × 5 =
  10. 10.57 × 50 =
  11. 11.41 × 5 =
  12. 12.31 × 5 =
  13. 13.93 × 5 =
  14. 14.13 × 5 =
  15. 15.35 × 5 =
  16. 16.66 × 50 =
  17. 17.50 × 5 =
  18. 18.86 × 5 =
  19. 19.96 × 5 =
  20. 20.98 × 5 =
  21. 21.95 × 50 =
  22. 22.27 × 50 =
  23. 23.86 × 50 =
  24. 24.24 × 50 =
  25. 25.22 × 5 =
  26. 26.63 × 5 =
  27. 27.36 × 5 =
  28. 28.36 × 50 =
  29. 29.38 × 50 =
  30. 30.98 × 5 =
  31. 31.13 × 5 =
  32. 32.91 × 5 =
  33. 33.33 × 5 =
  34. 34.34 × 50 =
  35. 35.53 × 50 =
  36. 36.33 × 5 =
  37. 37.90 × 50 =
  38. 38.69 × 5 =
  39. 39.36 × 50 =
  40. 40.92 × 50 =

Answer key

  1. 1050
  2. 185
  3. 120
  4. 70
  5. 3550
  6. 385
  7. 320
  8. 115
  9. 330
  10. 2850
  11. 205
  12. 155
  13. 465
  14. 65
  15. 175
  16. 3300
  17. 250
  18. 430
  19. 480
  20. 490
  21. 4750
  22. 1350
  23. 4300
  24. 1200
  25. 110
  26. 315
  27. 180
  28. 1800
  29. 1900
  30. 490
  31. 65
  32. 455
  33. 165
  34. 1700
  35. 2650
  36. 165
  37. 4500
  38. 345
  39. 1800
  40. 4600

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