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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 497 · 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. 1.89 × 50 =
  2. 2.76 × 5 =
  3. 3.68 × 50 =
  4. 4.86 × 5 =
  5. 5.60 × 50 =
  6. 6.15 × 5 =
  7. 7.89 × 5 =
  8. 8.98 × 5 =
  9. 9.72 × 50 =
  10. 10.79 × 50 =
  11. 11.37 × 50 =
  12. 12.94 × 5 =
  13. 13.94 × 5 =
  14. 14.41 × 50 =
  15. 15.15 × 5 =
  16. 16.51 × 5 =
  17. 17.13 × 5 =
  18. 18.74 × 50 =
  19. 19.71 × 5 =
  20. 20.75 × 5 =
  21. 21.92 × 5 =
  22. 22.65 × 5 =
  23. 23.52 × 50 =
  24. 24.14 × 50 =
  25. 25.57 × 50 =
  26. 26.73 × 50 =
  27. 27.56 × 5 =
  28. 28.26 × 5 =
  29. 29.95 × 50 =
  30. 30.35 × 5 =
  31. 31.59 × 5 =
  32. 32.73 × 50 =
  33. 33.36 × 5 =
  34. 34.40 × 5 =
  35. 35.35 × 50 =
  36. 36.38 × 50 =
  37. 37.93 × 5 =
  38. 38.25 × 50 =
  39. 39.51 × 5 =
  40. 40.92 × 50 =

Answer key

  1. 4450
  2. 380
  3. 3400
  4. 430
  5. 3000
  6. 75
  7. 445
  8. 490
  9. 3600
  10. 3950
  11. 1850
  12. 470
  13. 470
  14. 2050
  15. 75
  16. 255
  17. 65
  18. 3700
  19. 355
  20. 375
  21. 460
  22. 325
  23. 2600
  24. 700
  25. 2850
  26. 3650
  27. 280
  28. 130
  29. 4750
  30. 175
  31. 295
  32. 3650
  33. 180
  34. 200
  35. 1750
  36. 1900
  37. 465
  38. 1250
  39. 255
  40. 4600

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