- minus 減號(hào);負(fù)號(hào)
± plus or minus 正負(fù)號(hào)
× is multiplied by 乘號(hào)
÷ is divided by 除號(hào)
= is equal to 等于號(hào)
≠ is not equal to 不等于號(hào)
≡ is equivalent to 全等于號(hào)
≌ is equal to or approximately equal to 等于或約等于號(hào)
≈ is approximately equal to 約等于號(hào)
< is less than 小于號(hào)
> is more than 大于號(hào)
≮ is not less than 不小于號(hào)
≯ is not more than 不大于號(hào)
≤ is less than or equal to 小于或等于號(hào)
≥ is more than or equal to 大于或等于號(hào)
% per cent 百分之…
‰ per mill 千分之…
∞ infinity 無限大號(hào)
∝ varies as 與…成比例
√ (square) root 平方根