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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 904 · 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. 1.69 × 5 =
  2. 2.24 × 50 =
  3. 3.61 × 5 =
  4. 4.75 × 5 =
  5. 5.39 × 50 =
  6. 6.55 × 5 =
  7. 7.52 × 50 =
  8. 8.75 × 50 =
  9. 9.71 × 50 =
  10. 10.63 × 50 =
  11. 11.35 × 5 =
  12. 12.63 × 5 =
  13. 13.47 × 50 =
  14. 14.98 × 5 =
  15. 15.80 × 50 =
  16. 16.19 × 50 =
  17. 17.41 × 50 =
  18. 18.16 × 50 =
  19. 19.23 × 50 =
  20. 20.93 × 5 =
  21. 21.17 × 5 =
  22. 22.67 × 50 =
  23. 23.74 × 5 =
  24. 24.52 × 50 =
  25. 25.25 × 5 =
  26. 26.67 × 5 =
  27. 27.50 × 5 =
  28. 28.34 × 50 =
  29. 29.22 × 50 =
  30. 30.70 × 5 =
  31. 31.26 × 50 =
  32. 32.37 × 5 =
  33. 33.97 × 50 =
  34. 34.41 × 5 =
  35. 35.48 × 50 =
  36. 36.61 × 50 =
  37. 37.13 × 5 =
  38. 38.44 × 50 =
  39. 39.23 × 50 =
  40. 40.72 × 50 =

Answer key

  1. 345
  2. 1200
  3. 305
  4. 375
  5. 1950
  6. 275
  7. 2600
  8. 3750
  9. 3550
  10. 3150
  11. 175
  12. 315
  13. 2350
  14. 490
  15. 4000
  16. 950
  17. 2050
  18. 800
  19. 1150
  20. 465
  21. 85
  22. 3350
  23. 370
  24. 2600
  25. 125
  26. 335
  27. 250
  28. 1700
  29. 1100
  30. 350
  31. 1300
  32. 185
  33. 4850
  34. 205
  35. 2400
  36. 3050
  37. 65
  38. 2200
  39. 1150
  40. 3600

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