2 + 2 = 4
5 × 3 = 15
a² + b² = c²
∫ f(x)dx
y = mx + b
E = mc²
sin²θ + cos²θ = 1
12 ÷ 3 = 4
π
e
φ
∞
Σ
Δ
α
β
γ
θ
λ
μ
2
3
5
7
11
13
17
19
23
29
31
37
+
−
×
÷
=
≠
≈
≤
≥
<
>
√
1
4
9
16
25
36
49
64
81
100
144
169
½
¼
¾
⅓
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