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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 488 · 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. 1.15 × 5 =
  2. 2.98 × 5 =
  3. 3.83 × 5 =
  4. 4.26 × 5 =
  5. 5.59 × 50 =
  6. 6.15 × 50 =
  7. 7.19 × 50 =
  8. 8.24 × 50 =
  9. 9.42 × 5 =
  10. 10.94 × 5 =
  11. 11.90 × 50 =
  12. 12.85 × 5 =
  13. 13.86 × 5 =
  14. 14.22 × 50 =
  15. 15.64 × 5 =
  16. 16.54 × 5 =
  17. 17.42 × 5 =
  18. 18.90 × 50 =
  19. 19.91 × 50 =
  20. 20.50 × 5 =
  21. 21.49 × 50 =
  22. 22.84 × 5 =
  23. 23.59 × 50 =
  24. 24.90 × 5 =
  25. 25.42 × 5 =
  26. 26.19 × 50 =
  27. 27.49 × 5 =
  28. 28.33 × 50 =
  29. 29.72 × 50 =
  30. 30.63 × 5 =
  31. 31.30 × 5 =
  32. 32.55 × 5 =
  33. 33.33 × 5 =
  34. 34.96 × 50 =
  35. 35.54 × 50 =
  36. 36.76 × 50 =
  37. 37.51 × 50 =
  38. 38.79 × 5 =
  39. 39.84 × 5 =
  40. 40.14 × 50 =

Answer key

  1. 75
  2. 490
  3. 415
  4. 130
  5. 2950
  6. 750
  7. 950
  8. 1200
  9. 210
  10. 470
  11. 4500
  12. 425
  13. 430
  14. 1100
  15. 320
  16. 270
  17. 210
  18. 4500
  19. 4550
  20. 250
  21. 2450
  22. 420
  23. 2950
  24. 450
  25. 210
  26. 950
  27. 245
  28. 1650
  29. 3600
  30. 315
  31. 150
  32. 275
  33. 165
  34. 4800
  35. 2700
  36. 3800
  37. 2550
  38. 395
  39. 420
  40. 700

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