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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 172 · 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. 1.49 × 5 =
  2. 2.50 × 50 =
  3. 3.43 × 5 =
  4. 4.88 × 5 =
  5. 5.93 × 5 =
  6. 6.18 × 5 =
  7. 7.25 × 50 =
  8. 8.65 × 50 =
  9. 9.26 × 50 =
  10. 10.74 × 5 =
  11. 11.67 × 50 =
  12. 12.41 × 5 =
  13. 13.68 × 5 =
  14. 14.91 × 5 =
  15. 15.60 × 5 =
  16. 16.14 × 50 =
  17. 17.61 × 5 =
  18. 18.72 × 50 =
  19. 19.75 × 5 =
  20. 20.94 × 5 =
  21. 21.34 × 50 =
  22. 22.70 × 50 =
  23. 23.90 × 50 =
  24. 24.86 × 50 =
  25. 25.52 × 50 =
  26. 26.35 × 5 =
  27. 27.62 × 50 =
  28. 28.23 × 5 =
  29. 29.95 × 5 =
  30. 30.61 × 5 =
  31. 31.50 × 50 =
  32. 32.25 × 5 =
  33. 33.62 × 5 =
  34. 34.41 × 50 =
  35. 35.37 × 5 =
  36. 36.87 × 50 =
  37. 37.68 × 50 =
  38. 38.97 × 50 =
  39. 39.66 × 5 =
  40. 40.47 × 50 =

Answer key

  1. 245
  2. 2500
  3. 215
  4. 440
  5. 465
  6. 90
  7. 1250
  8. 3250
  9. 1300
  10. 370
  11. 3350
  12. 205
  13. 340
  14. 455
  15. 300
  16. 700
  17. 305
  18. 3600
  19. 375
  20. 470
  21. 1700
  22. 3500
  23. 4500
  24. 4300
  25. 2600
  26. 175
  27. 3100
  28. 115
  29. 475
  30. 305
  31. 2500
  32. 125
  33. 310
  34. 2050
  35. 185
  36. 4350
  37. 3400
  38. 4850
  39. 330
  40. 2350

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