计算下面各题（能简算的要简算）0.25×0.5×169.7×0.47+1.53×9.7-9.70.64÷1.6+0.823.52-1.05×4．

Question

计算下面各题（能简算的要简算）
0.25×0.5×16
9.7×0.47+1.53×9.7-9.7
0.64÷1.6+0.8
23.52-1.05×4．

Answer 1

（1）0.25×0.5×16
=0.25×0.5×4×4
=（0.25×4）×（0.5×4）
=1×2
=2

（2）9.7×0.47+1.53×9.7-9.7
=9.7×（0.47+1.53-1）
=9.7×1
=9.7

（3）0.64÷1.6+0.8
=0.4+0.8
=1.2

（4）23.52-1.05×4
=23.52-4.2
=19.32