制作一个可供小学数学运算的程序。范围为0—100 整数加减乘除四则运算，如结果为小数四舍五入保留小数点后两位。

根据输入题数出题，题目应为随机，每次应不一样。

-Make a for primary school of mathematical.

Range of 0 100 integerAdds, subtracts, divides the operation of the fourAs a result of decimals, keep two. after the decimal point.

According to the point of giving them, they should be random, and every time should be different.