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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 937 · 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. 1.33 × 50 =
  2. 2.14 × 50 =
  3. 3.97 × 50 =
  4. 4.63 × 5 =
  5. 5.32 × 5 =
  6. 6.37 × 5 =
  7. 7.49 × 5 =
  8. 8.49 × 50 =
  9. 9.77 × 5 =
  10. 10.82 × 5 =
  11. 11.86 × 5 =
  12. 12.19 × 5 =
  13. 13.71 × 5 =
  14. 14.70 × 50 =
  15. 15.65 × 50 =
  16. 16.89 × 5 =
  17. 17.77 × 50 =
  18. 18.87 × 50 =
  19. 19.81 × 5 =
  20. 20.24 × 50 =
  21. 21.57 × 50 =
  22. 22.52 × 50 =
  23. 23.94 × 5 =
  24. 24.69 × 5 =
  25. 25.93 × 5 =
  26. 26.93 × 5 =
  27. 27.74 × 5 =
  28. 28.35 × 50 =
  29. 29.47 × 50 =
  30. 30.75 × 50 =
  31. 31.31 × 50 =
  32. 32.59 × 50 =
  33. 33.42 × 5 =
  34. 34.33 × 50 =
  35. 35.37 × 50 =
  36. 36.31 × 50 =
  37. 37.84 × 5 =
  38. 38.47 × 5 =
  39. 39.26 × 50 =
  40. 40.52 × 5 =

Answer key

  1. 1650
  2. 700
  3. 4850
  4. 315
  5. 160
  6. 185
  7. 245
  8. 2450
  9. 385
  10. 410
  11. 430
  12. 95
  13. 355
  14. 3500
  15. 3250
  16. 445
  17. 3850
  18. 4350
  19. 405
  20. 1200
  21. 2850
  22. 2600
  23. 470
  24. 345
  25. 465
  26. 465
  27. 370
  28. 1750
  29. 2350
  30. 3750
  31. 1550
  32. 2950
  33. 210
  34. 1650
  35. 1850
  36. 1550
  37. 420
  38. 235
  39. 1300
  40. 260

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