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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 473 · 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. 1.25 × 5 =
  2. 2.62 × 5 =
  3. 3.57 × 50 =
  4. 4.23 × 50 =
  5. 5.88 × 50 =
  6. 6.38 × 5 =
  7. 7.50 × 50 =
  8. 8.67 × 5 =
  9. 9.14 × 50 =
  10. 10.26 × 50 =
  11. 11.83 × 50 =
  12. 12.51 × 5 =
  13. 13.91 × 50 =
  14. 14.85 × 5 =
  15. 15.62 × 5 =
  16. 16.25 × 50 =
  17. 17.66 × 5 =
  18. 18.24 × 5 =
  19. 19.78 × 50 =
  20. 20.15 × 50 =
  21. 21.16 × 50 =
  22. 22.60 × 5 =
  23. 23.43 × 5 =
  24. 24.66 × 50 =
  25. 25.66 × 5 =
  26. 26.57 × 50 =
  27. 27.82 × 5 =
  28. 28.18 × 5 =
  29. 29.66 × 50 =
  30. 30.38 × 5 =
  31. 31.82 × 5 =
  32. 32.42 × 5 =
  33. 33.24 × 5 =
  34. 34.64 × 50 =
  35. 35.69 × 50 =
  36. 36.73 × 50 =
  37. 37.55 × 5 =
  38. 38.19 × 5 =
  39. 39.68 × 5 =
  40. 40.98 × 5 =

Answer key

  1. 125
  2. 310
  3. 2850
  4. 1150
  5. 4400
  6. 190
  7. 2500
  8. 335
  9. 700
  10. 1300
  11. 4150
  12. 255
  13. 4550
  14. 425
  15. 310
  16. 1250
  17. 330
  18. 120
  19. 3900
  20. 750
  21. 800
  22. 300
  23. 215
  24. 3300
  25. 330
  26. 2850
  27. 410
  28. 90
  29. 3300
  30. 190
  31. 410
  32. 210
  33. 120
  34. 3200
  35. 3450
  36. 3650
  37. 275
  38. 95
  39. 340
  40. 490

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