Question

2-1/2+1/3-1/2+1/3-1/4 这题如何简便运算? 答案算出来是1又5/12.

Answer 1

2-1/2+1/3-1/2+1/3-1/4
=2-1+2/3-1/4
=1+8/12-3/12
=1又5/12
或
将原式乘以12
原式=24-6+4-6+4-3=17
再除以12
原式=1又5/12