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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 159 · 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. 1.36 × 50 =
  2. 2.14 × 50 =
  3. 3.40 × 50 =
  4. 4.35 × 5 =
  5. 5.12 × 50 =
  6. 6.71 × 5 =
  7. 7.62 × 5 =
  8. 8.23 × 50 =
  9. 9.84 × 5 =
  10. 10.95 × 5 =
  11. 11.96 × 50 =
  12. 12.95 × 50 =
  13. 13.22 × 5 =
  14. 14.87 × 50 =
  15. 15.66 × 50 =
  16. 16.65 × 5 =
  17. 17.86 × 5 =
  18. 18.26 × 50 =
  19. 19.24 × 5 =
  20. 20.33 × 50 =
  21. 21.67 × 50 =
  22. 22.97 × 50 =
  23. 23.53 × 50 =
  24. 24.87 × 5 =
  25. 25.49 × 50 =
  26. 26.85 × 50 =
  27. 27.70 × 50 =
  28. 28.61 × 5 =
  29. 29.81 × 5 =
  30. 30.34 × 5 =
  31. 31.67 × 5 =
  32. 32.94 × 5 =
  33. 33.24 × 5 =
  34. 34.97 × 50 =
  35. 35.22 × 5 =
  36. 36.55 × 50 =
  37. 37.58 × 5 =
  38. 38.93 × 5 =
  39. 39.57 × 50 =
  40. 40.73 × 50 =

Answer key

  1. 1800
  2. 700
  3. 2000
  4. 175
  5. 600
  6. 355
  7. 310
  8. 1150
  9. 420
  10. 475
  11. 4800
  12. 4750
  13. 110
  14. 4350
  15. 3300
  16. 325
  17. 430
  18. 1300
  19. 120
  20. 1650
  21. 3350
  22. 4850
  23. 2650
  24. 435
  25. 2450
  26. 4250
  27. 3500
  28. 305
  29. 405
  30. 170
  31. 335
  32. 470
  33. 120
  34. 4850
  35. 110
  36. 2750
  37. 290
  38. 465
  39. 2850
  40. 3650

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