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逆向计算百分比

逆向计算百分比
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2017-01-17 21:32
函数解析几何几何作图
所属专题 Concrete-Pictorial-Abstract and the Teaching for Mastery
这个范例演示了如何通过已知的百分比结果来计算原始值。它涉及百分比计算的核心概念。通过使用GeoGebra命令如Polygon、Segment、Textfield等，用户可以动态地探索和理解逆向百分比计算的过程。适合初中及以上学生学习和教师教学使用。

GeoGebra 命令及参数

  1. Polygon(B, A, C, D) → poly1, b, a, c, d
  2. Segment(A1, B1) → C1
  3. Segment(A2, B2) → C2
  4. Segment(A3, B3) → C3
  5. Segment(A4, B4) → C4
  6. Segment(A5, B5) → C5
  7. Segment(A6, B6) → C6
  8. Segment(A7, B7) → C7
  9. Segment(A8, B8) → C8
  10. Segment(A9, B9) → C9
  11. Segment(A10, B10) → C10
  12. Segment(A11, B11) → C11
  13. Segment(A12, B12) → C12
  14. Segment(A13, B13) → C13
  15. Segment(A14, B14) → C14
  16. Segment(A15, B15) → C15
  17. Segment(A16, B16) → C16
  18. Segment(A17, B17) → C17
  19. Segment(A18, B18) → C18
  20. Segment(A19, B19) → C19
  21. Segment(A20, B20) → C20
  22. Segment(A21, B21) → C21
  23. Segment(A22, B22) → C22
  24. Segment(A23, B23) → C23
  25. Segment(A24, B24) → C24
  26. Segment(A25, B25) → C25
  27. Segment(A26, B26) → C26
  28. Segment(A27, B27) → C27
  29. Segment(A28, B28) → C28
  30. Segment(A29, B29) → C29
  31. Segment(A30, B30) → C30
  32. Segment(A31, B31) → C31
  33. Segment(A32, B32) → C32
  34. Segment(A33, B33) → C33
  35. Segment(A34, B34) → C34
  36. Segment(A35, B35) → C35
  37. Segment(A36, B36) → C36
  38. Segment(A37, B37) → C37
  39. Segment(A38, B38) → C38
  40. Segment(A39, B39) → C39
  41. Segment(A40, B40) → C40
  42. Segment(A41, B41) → C41
  43. Segment(A42, B42) → C42
  44. Segment(A43, B43) → C43
  45. Segment(A44, B44) → C44
  46. Segment(A45, B45) → C45
  47. Segment(A46, B46) → C46
  48. Segment(A47, B47) → C47
  49. Segment(A48, B48) → C48
  50. Segment(A49, B49) → C49
  51. Segment(A50, B50) → C50
  52. Segment(A51, B51) → C51
  53. Segment(A52, B52) → C52
  54. Segment(A53, B53) → C53
  55. Segment(A54, B54) → C54
  56. Segment(A55, B55) → C55
  57. Segment(A56, B56) → C56
  58. Segment(A57, B57) → C57
  59. Segment(A58, B58) → C58
  60. Segment(A59, B59) → C59
  61. Segment(A60, B60) → C60
  62. Segment(A61, B61) → C61
  63. Segment(A62, B62) → C62
  64. Segment(A63, B63) → C63
  65. Segment(A64, B64) → C64
  66. Segment(A65, B65) → C65
  67. Segment(A66, B66) → C66
  68. Segment(A67, B67) → C67
  69. Segment(A68, B68) → C68
  70. Segment(A69, B69) → C69
  71. Segment(A70, B70) → C70
  72. Segment(A71, B71) → C71
  73. Segment(A72, B72) → C72
  74. Segment(A73, B73) → C73
  75. Segment(A74, B74) → C74
  76. Segment(A75, B75) → C75
  77. Segment(A76, B76) → C76
  78. Segment(A77, B77) → C77
  79. Segment(A78, B78) → C78
  80. Segment(A79, B79) → C79
  81. Segment(A80, B80) → C80
  82. Segment(A81, B81) → C81
  83. Segment(A82, B82) → C82
  84. Segment(A83, B83) → C83
  85. Segment(A84, B84) → C84
  86. Segment(A85, B85) → C85
  87. Segment(A86, B86) → C86
  88. Segment(A87, B87) → C87
  89. Segment(A88, B88) → C88
  90. Segment(A89, B89) → C89
  91. Segment(A90, B90) → C90
  92. Segment(A91, B91) → C91
  93. Segment(A92, B92) → C92
  94. Segment(A93, B93) → C93
  95. Segment(A94, B94) → C94
  96. Segment(A95, B95) → C95
  97. Segment(A96, B96) → C96
  98. Segment(A97, B97) → C97
  99. Segment(A98, B98) → C98
  100. Segment(A99, B99) → C99
  101. Segment(A100, B100) → C100
  102. Textfield(D1) → InputBox1
  103. Segment(I, G) → g
  104. Random(10, 99) → D2
  105. Random(2, 25) → D3
  106. Textfield(E1) → InputBox2
  107. Polygon(F, D, C, E) → poly2, f, d_1, c_1, e_1
  108. Polygon(M, H, A, B) → poly3, h, l, m, n