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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 892 · 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. 1.68 × 50 =
  2. 2.93 × 5 =
  3. 3.66 × 5 =
  4. 4.98 × 5 =
  5. 5.64 × 50 =
  6. 6.21 × 5 =
  7. 7.69 × 5 =
  8. 8.14 × 5 =
  9. 9.29 × 50 =
  10. 10.51 × 5 =
  11. 11.90 × 5 =
  12. 12.96 × 50 =
  13. 13.96 × 5 =
  14. 14.53 × 50 =
  15. 15.43 × 50 =
  16. 16.82 × 50 =
  17. 17.33 × 5 =
  18. 18.86 × 5 =
  19. 19.35 × 5 =
  20. 20.42 × 5 =
  21. 21.63 × 5 =
  22. 22.23 × 50 =
  23. 23.13 × 5 =
  24. 24.78 × 50 =
  25. 25.66 × 5 =
  26. 26.19 × 50 =
  27. 27.23 × 50 =
  28. 28.39 × 50 =
  29. 29.26 × 5 =
  30. 30.61 × 50 =
  31. 31.21 × 5 =
  32. 32.17 × 5 =
  33. 33.73 × 50 =
  34. 34.98 × 50 =
  35. 35.98 × 50 =
  36. 36.78 × 50 =
  37. 37.54 × 50 =
  38. 38.33 × 5 =
  39. 39.66 × 50 =
  40. 40.33 × 50 =

Answer key

  1. 3400
  2. 465
  3. 330
  4. 490
  5. 3200
  6. 105
  7. 345
  8. 70
  9. 1450
  10. 255
  11. 450
  12. 4800
  13. 480
  14. 2650
  15. 2150
  16. 4100
  17. 165
  18. 430
  19. 175
  20. 210
  21. 315
  22. 1150
  23. 65
  24. 3900
  25. 330
  26. 950
  27. 1150
  28. 1950
  29. 130
  30. 3050
  31. 105
  32. 85
  33. 3650
  34. 4900
  35. 4900
  36. 3900
  37. 2700
  38. 165
  39. 3300
  40. 1650

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