＋（加）读作：plus, add
-（减）读作：minus
×（乘）读作：is multiplied by
÷（除）读作：is divided by
=（等于）读作：is equal to
≠（不等于）读作：is not equal to
＜（小于）读作：is less than
＞（大于）读作：is greater than
≤（小于等于）读作：is less than or equal to
≥（大于等于）读作：is more than or equal to
≈（约等于）读作：approximately equal/is approximately equal to
%（百分之）读作：percent
‰（千分之）读作：per mill
∞（无限）读作：infinity
π（圆周率）读作：pi
（三角形）读作：triangle
⊥（垂直于）读作：perpendicular to
∥（平行于）读作：be parallel to
∵（因为）读作：because/since
∴（所以）读作：therefore/so/hence
