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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 848 · 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. 1.90 × 50 =
  2. 2.22 × 5 =
  3. 3.22 × 5 =
  4. 4.39 × 50 =
  5. 5.59 × 50 =
  6. 6.91 × 5 =
  7. 7.14 × 5 =
  8. 8.74 × 50 =
  9. 9.31 × 50 =
  10. 10.23 × 5 =
  11. 11.32 × 5 =
  12. 12.29 × 50 =
  13. 13.53 × 50 =
  14. 14.77 × 50 =
  15. 15.74 × 50 =
  16. 16.44 × 50 =
  17. 17.97 × 50 =
  18. 18.62 × 50 =
  19. 19.98 × 5 =
  20. 20.18 × 50 =
  21. 21.92 × 50 =
  22. 22.29 × 50 =
  23. 23.95 × 5 =
  24. 24.96 × 5 =
  25. 25.84 × 5 =
  26. 26.88 × 5 =
  27. 27.94 × 50 =
  28. 28.52 × 5 =
  29. 29.30 × 50 =
  30. 30.48 × 50 =
  31. 31.21 × 50 =
  32. 32.35 × 50 =
  33. 33.47 × 50 =
  34. 34.66 × 5 =
  35. 35.74 × 50 =
  36. 36.68 × 5 =
  37. 37.33 × 5 =
  38. 38.42 × 5 =
  39. 39.57 × 50 =
  40. 40.18 × 50 =

Answer key

  1. 4500
  2. 110
  3. 110
  4. 1950
  5. 2950
  6. 455
  7. 70
  8. 3700
  9. 1550
  10. 115
  11. 160
  12. 1450
  13. 2650
  14. 3850
  15. 3700
  16. 2200
  17. 4850
  18. 3100
  19. 490
  20. 900
  21. 4600
  22. 1450
  23. 475
  24. 480
  25. 420
  26. 440
  27. 4700
  28. 260
  29. 1500
  30. 2400
  31. 1050
  32. 1750
  33. 2350
  34. 330
  35. 3700
  36. 340
  37. 165
  38. 210
  39. 2850
  40. 900

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