Question

3.5x0.6-1.8×0.5简便运算？

Answer 1

这个题考查的是简便方法的运算，就是不用笔算，口算就可以算出来的，计算过程如下:
3.5×0.6－1.8×0.5
=3.5×0.6－(3×0.6)×0.5
=3.5×0.6－(3×0.5)×0.6
=3.5×0.6－1.5×0.6
=0.6×(3.5－1.5)
=0.6×2
=1.2
望采纳。

Answer 2

简便算法如下
3.5×0.6-1.8×0.5
=0.5×7×0.6-1.8×0.5
=0.5×4.2-0.5×1.8
=0.5×（4.2-1.8）
=0.5×2.4
=0.5×（2+0.4）
=0.5×2+0.5×0.4
=1+0.2
=1.2

Answer 3

3.5×0.6-1.8×0.5
=7×0.5×0.6-3×0.6×0.5
=7×（0.5×0.6）-3×（0.6×0.5）
=7×0.3-3×0.3
=（7-3）×0.3
=4×0.3
=1.2

Answer 4

3.5×0.6-1.8×0.5
=3.5×2×0.3-0.9×2×0.5
=7×0.3-0.9×1
=2.1-0.9
=1.2

Answer 5

3.5×0.6－1.8×0.5
＝3.5×（0.6－0.5）×1.8
＝3.5×0.1×1.8
＝0.35×1.8
＝0.63