fenny80231
加：add, 如：Add 2 to 3, we get 5. plus, 2 plus 3 equals to 5减： subtract, 如：2 substracted from 5 is 3 minus, 如： 5 minus 2 is 3.乘：multiply , 如： multiply 2 by 3 times 如： 3 times 2 is 6除：divide, 如， 6 divided by 3 equals to 2 参考资料：新世纪汉英大字典
吃货的晚宴
减法，用英文写作subtraction.单项式和多项式都统称为整式。整式是有理式的一部分，在有理式中可以包含加，减，乘，除、乘方五种运算，但在整式中除数不能含有字母。减法是四则运算之一，从一个数量中减去另一个数量的运算叫做减法;已知两个加数的和与其中一个加数，求另一个加数的运算叫做减法。表示减法的符号是“-”，读作减号。单项式加减即合并同类项，也就是合并前各同类项系数的和，字母不变。同时还要运用到去括号法则和添括号法则。希望我能帮助你解疑释惑。
Too兔rich
1. 加法：加法运算通常用and, plus, add 等表示。如：Seven and [plus] eight is [are, make(s)] fifteen. 7加8等于15。If you add ten to eight, you get eighteen. 10加8等于18。2. 减法：减法运算通常用 minus, from, take (away) (from) 等表示。如：Eight minus five is [leaves] three. 8减 5等于3。4 from 20 leaves 16. 20减4余16。Ten take away four is [leaves] six. 10减去4得6。(D8)If you take five from twelve, you’re left with seven. 12减去5得7。If you take four away from ten, that leaves six. 10减去4得6。3. 乘法：乘法运算通常用 times, multiplied by, twice 等表示。如：Five times three is [equals] fifteen. 5乘以3等于15。Five multiplied by two equals ten. 5乘以2等于10。What is twice two? 2乘2是多少? 4. 除法：除法运算通常用 divided by, into 等表示。如：Twelve divided by four is [makes] three. 12除以4等于3。Four into twelve is [makes] three. 12除以4等于3。
龙宝宝lovyle
[词典] [数] subtraction; subduction; [网络] SUB; subtract; MINUS; [例句]该服务是一个简单的数学计算服务，提供了加法和减法操作。This service is a simple math calculation service, providing addition and subtractionoperations.
