一加一等于二英语读作：one plus one is two
知识拓展：
1、加法：“加”用plus，and或add表示；“等于”用is，make，equal等词表示。
1+1=？可表示为：How much is one plus two?
1+2=3可表示为：One plus two is three.
One and two is equal to three.
One and two make(s) three.
2、减法：“减”用minus或take from表示。
9-3=？可表示为：How much is nine minus three?
9-3=6可表示为：Nine minus three is six.
Take three from nine and the remainder is six.
3、除法：“除”用divide的过去分词形式表示。
15÷3=？可表示为：How much is fifteen divided by three?
15÷3=5可表示为：Fifteen divided by three is five.
Fifteen divided by three equalsgives/makes five.
5、其他算式的写法和读法
1：2读作the ratio of one to two
15：3=5读作The ratio of fifteen to three equals five.
3的平方读作：three squared
2的立方=8读作：Two cubed is eight.
X的四次方=Y读作：The fourth power of X is Y.
4开平方=2读作：The square root of four is two.
8开立方=2读作The cubic root of eight is two.