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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 905 · 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. 1.80 × 50 =
  2. 2.29 × 5 =
  3. 3.35 × 5 =
  4. 4.73 × 50 =
  5. 5.23 × 50 =
  6. 6.13 × 5 =
  7. 7.44 × 50 =
  8. 8.38 × 5 =
  9. 9.19 × 50 =
  10. 10.96 × 50 =
  11. 11.31 × 50 =
  12. 12.17 × 50 =
  13. 13.19 × 50 =
  14. 14.60 × 5 =
  15. 15.78 × 5 =
  16. 16.74 × 5 =
  17. 17.94 × 5 =
  18. 18.48 × 50 =
  19. 19.57 × 5 =
  20. 20.47 × 5 =
  21. 21.12 × 5 =
  22. 22.25 × 5 =
  23. 23.90 × 5 =
  24. 24.12 × 5 =
  25. 25.38 × 50 =
  26. 26.44 × 50 =
  27. 27.88 × 5 =
  28. 28.17 × 5 =
  29. 29.65 × 50 =
  30. 30.37 × 5 =
  31. 31.50 × 5 =
  32. 32.58 × 50 =
  33. 33.72 × 50 =
  34. 34.14 × 5 =
  35. 35.18 × 50 =
  36. 36.78 × 50 =
  37. 37.72 × 5 =
  38. 38.94 × 50 =
  39. 39.95 × 5 =
  40. 40.36 × 50 =

Answer key

  1. 4000
  2. 145
  3. 175
  4. 3650
  5. 1150
  6. 65
  7. 2200
  8. 190
  9. 950
  10. 4800
  11. 1550
  12. 850
  13. 950
  14. 300
  15. 390
  16. 370
  17. 470
  18. 2400
  19. 285
  20. 235
  21. 60
  22. 125
  23. 450
  24. 60
  25. 1900
  26. 2200
  27. 440
  28. 85
  29. 3250
  30. 185
  31. 250
  32. 2900
  33. 3600
  34. 70
  35. 900
  36. 3900
  37. 360
  38. 4700
  39. 475
  40. 1800

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