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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 188 · 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. 1.59 × 5 =
  2. 2.94 × 50 =
  3. 3.84 × 50 =
  4. 4.14 × 5 =
  5. 5.87 × 5 =
  6. 6.87 × 5 =
  7. 7.84 × 5 =
  8. 8.15 × 50 =
  9. 9.92 × 5 =
  10. 10.52 × 50 =
  11. 11.47 × 50 =
  12. 12.84 × 5 =
  13. 13.56 × 50 =
  14. 14.70 × 5 =
  15. 15.82 × 5 =
  16. 16.37 × 5 =
  17. 17.72 × 50 =
  18. 18.86 × 5 =
  19. 19.91 × 50 =
  20. 20.22 × 50 =
  21. 21.33 × 50 =
  22. 22.44 × 50 =
  23. 23.31 × 50 =
  24. 24.55 × 50 =
  25. 25.65 × 5 =
  26. 26.31 × 50 =
  27. 27.12 × 50 =
  28. 28.94 × 5 =
  29. 29.80 × 5 =
  30. 30.97 × 5 =
  31. 31.45 × 50 =
  32. 32.24 × 5 =
  33. 33.98 × 5 =
  34. 34.57 × 5 =
  35. 35.80 × 50 =
  36. 36.88 × 50 =
  37. 37.85 × 5 =
  38. 38.25 × 50 =
  39. 39.30 × 50 =
  40. 40.18 × 5 =

Answer key

  1. 295
  2. 4700
  3. 4200
  4. 70
  5. 435
  6. 435
  7. 420
  8. 750
  9. 460
  10. 2600
  11. 2350
  12. 420
  13. 2800
  14. 350
  15. 410
  16. 185
  17. 3600
  18. 430
  19. 4550
  20. 1100
  21. 1650
  22. 2200
  23. 1550
  24. 2750
  25. 325
  26. 1550
  27. 600
  28. 470
  29. 400
  30. 485
  31. 2250
  32. 120
  33. 490
  34. 285
  35. 4000
  36. 4400
  37. 425
  38. 1250
  39. 1500
  40. 90

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