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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 882 · 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. 1.67 × 5 =
  2. 2.72 × 5 =
  3. 3.36 × 50 =
  4. 4.41 × 50 =
  5. 5.62 × 50 =
  6. 6.13 × 50 =
  7. 7.16 × 5 =
  8. 8.17 × 50 =
  9. 9.97 × 5 =
  10. 10.92 × 5 =
  11. 11.75 × 50 =
  12. 12.59 × 50 =
  13. 13.23 × 5 =
  14. 14.27 × 5 =
  15. 15.60 × 5 =
  16. 16.33 × 50 =
  17. 17.79 × 5 =
  18. 18.29 × 5 =
  19. 19.34 × 5 =
  20. 20.79 × 50 =
  21. 21.40 × 5 =
  22. 22.54 × 5 =
  23. 23.12 × 50 =
  24. 24.33 × 50 =
  25. 25.35 × 5 =
  26. 26.86 × 50 =
  27. 27.75 × 5 =
  28. 28.97 × 50 =
  29. 29.92 × 5 =
  30. 30.84 × 5 =
  31. 31.86 × 5 =
  32. 32.36 × 5 =
  33. 33.34 × 5 =
  34. 34.65 × 5 =
  35. 35.23 × 5 =
  36. 36.74 × 5 =
  37. 37.33 × 50 =
  38. 38.74 × 50 =
  39. 39.30 × 50 =
  40. 40.44 × 5 =

Answer key

  1. 335
  2. 360
  3. 1800
  4. 2050
  5. 3100
  6. 650
  7. 80
  8. 850
  9. 485
  10. 460
  11. 3750
  12. 2950
  13. 115
  14. 135
  15. 300
  16. 1650
  17. 395
  18. 145
  19. 170
  20. 3950
  21. 200
  22. 270
  23. 600
  24. 1650
  25. 175
  26. 4300
  27. 375
  28. 4850
  29. 460
  30. 420
  31. 430
  32. 180
  33. 170
  34. 325
  35. 115
  36. 370
  37. 1650
  38. 3700
  39. 1500
  40. 220

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