4分之1乘2.2减0.25差是多少?

问题描述:

4分之1乘2.2减0.25差是多少?

0.3
0.3
0.3

0.3 4分子1就是0.25提出来,在用2.2-1在乘以0.25

0.3,用计算机算

4分之1x2.2-0.25
=0.25x2.2-0.25x1
=0.25x(2.2-1)
=0.25x1.2
=0.3

=1/4×2.2-1/4
=1/4×(2.2-1)
=1/4×1.2
=0.3