分数加减练习

GeoGebra 命令及参数

1. Random(6, 12) → d1
2. Random(-11, 12) → c1
3. If(c1 ≟ 0, -12, c1) → c2
4. GCD(c2, d1) → h2
5. Random(6, 12) → b1
6. Random(-11, 12) → a1
7. If(a1 ≟ 0, -12, a1) → a2
8. GCD(a2, b1) → h1
9. LCM(b, d) → cor
10. If(a > 0, "", "-") → s1
11. If(c > 0, "", "-") → s2
12. If(b ≟ 1, "" + s1 + aba, text1) → text3
13. If(d ≟ 1, "" + s2 + abc, text2) → text4
14. If(a > 0, text3, "(" + text3 + ")") → text5
15. If(c > 0, text4, "(" + text4 + ")") → text6
16. If(h > 0, "" + h, "(" + h + ")") → text11
17. If(m ≟ 1, g + h, g - h) → i
18. FractionText(i / cor) → t1
19. Mod(abs(i), cor) → j
20. GCD(j, cor) → l
21. FractionText(j / cor) → text16
22. If(i > 0, "", "-") → s3
23. If(m ≟ 1, "+", "-") → sig
24. FractionText(i2 / cor) → t2
25. FractionText(i3 / cor) → t3
26. FractionText(i4 / cor) → t4
27. Random(1, 4) → p
28. If(r ≟ 1, "ก.", If[r ≟ 2, "ข.", If[r ≟ 3, "ค.", "ง."]]) → text28
29. If(p ≟ 1, "ก.", If[p ≟ 2, "ข.", If[p ≟ 3, "ค.", "ง."]]) → text29