0.25×36+0.5×72怎么简算
问题描述:
0.25×36+0.5×72怎么简算
答
0.25 x 4 x 9 + 0.5 x 8 x 9
= 1 x 9 + 4 x 9
= (1 + 4) x 9
= 5 x 9
= 45