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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 884 · 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. 1.44 × 50 =
  2. 2.67 × 5 =
  3. 3.81 × 5 =
  4. 4.37 × 50 =
  5. 5.94 × 50 =
  6. 6.26 × 50 =
  7. 7.32 × 5 =
  8. 8.77 × 5 =
  9. 9.29 × 50 =
  10. 10.23 × 50 =
  11. 11.96 × 5 =
  12. 12.84 × 5 =
  13. 13.63 × 50 =
  14. 14.86 × 5 =
  15. 15.15 × 5 =
  16. 16.16 × 5 =
  17. 17.24 × 50 =
  18. 18.13 × 5 =
  19. 19.26 × 50 =
  20. 20.49 × 50 =
  21. 21.79 × 50 =
  22. 22.24 × 5 =
  23. 23.27 × 5 =
  24. 24.88 × 5 =
  25. 25.17 × 5 =
  26. 26.74 × 5 =
  27. 27.30 × 50 =
  28. 28.18 × 5 =
  29. 29.92 × 5 =
  30. 30.78 × 5 =
  31. 31.23 × 5 =
  32. 32.58 × 50 =
  33. 33.58 × 5 =
  34. 34.13 × 50 =
  35. 35.92 × 5 =
  36. 36.50 × 5 =
  37. 37.22 × 5 =
  38. 38.58 × 5 =
  39. 39.85 × 50 =
  40. 40.27 × 5 =

Answer key

  1. 2200
  2. 335
  3. 405
  4. 1850
  5. 4700
  6. 1300
  7. 160
  8. 385
  9. 1450
  10. 1150
  11. 480
  12. 420
  13. 3150
  14. 430
  15. 75
  16. 80
  17. 1200
  18. 65
  19. 1300
  20. 2450
  21. 3950
  22. 120
  23. 135
  24. 440
  25. 85
  26. 370
  27. 1500
  28. 90
  29. 460
  30. 390
  31. 115
  32. 2900
  33. 290
  34. 650
  35. 460
  36. 250
  37. 110
  38. 290
  39. 4250
  40. 135

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