加减乘除表示法
1. “加”用plus，and或add表示；“等于”用is，make，equal等词表示。
2+3=? 可表示为： How much is two plus three?
2+3=5 Two plus three is five．
Two and three is equal to five．
Two and three make five．
Two added to three equals five．
If we add two to/and three, we get five．
2. “减”用 minus或 take from表示
10－6＝? How much is ten minus six?
10-6=4 Ten minus six is four．
Take six from ten and the remainder is four.
Six (taken) from ten is four．
3. “乘”用time（动词）或multiply表示
3X4＝? How much is three times four?
3X4=12 Three times four is/are twelve．
Multiply three by four，we get twelve．
Three multiplied by four makes twelve．
4. “除”用divide的过去分词形式表示
16÷4=? How much is sixteen divided by four?
16÷4＝4 Sixteen divided by four is four．
Sixteen divided by four equals/gives/makes four．
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