0.75*6.9*4怎样简便运算
问题描述:
0.75*6.9*4怎样简便运算
答
原式=(0.75*4)*6.9
=3*6.9
=20.7
0.75*6.9*4怎样简便运算
原式=(0.75*4)*6.9
=3*6.9
=20.7