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一、【加法】“+”號 在英語里一般用這三個：①and ②plus③add -Seven and / plus eight makes fifteen. 7加8等于15,。 -If you add ten to eight, you get eighteen.10加8等于18,。 二、【減法】“—”號在英語里一般用這三個：① minus ②from ③take (away)(from) -Eight minus five is (leaves)three.8減 5等于3,。/ 8減5余3,。 *注：在減法里，“=”也可以用leaves, 同漢語里的“余” -4 from 20 leaves 16. 20減4余16,。 -Ten take away four is six. 10減去4得6,。 三、【乘法】“x” 號在英語里一般用這兩個：① times ②multiplied by -Five times three is / equals fifteen. 5乘以3等于15,。 -Five multiplied bytwo equals ten. 5乘以2等于10,。 四、【除法】“÷”號在英語里一般用這兩個：① divided by ② into -Twelve divided by four makes three. 12除以4等于3,。 -Four into twelve is three. 12除以4等于3,。 |
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