Question

脱式计算，能简算的要简算．

475+660÷33×25	400-14
	5.84×1.36+1.36×3.16+1.36
[1.9-6÷（2.4×5）]÷（14×0.2）	．

Answer 1

解：475+660÷33×25
=475+20×25
=475+500
=975；
（）×36
=×36+×36-×36
=20+-33
=18.5
[1.9-6÷（2.4×5）]÷（14×0.2）
=[1.9-6÷12]÷2.8
=[1.9-0.5]÷2.8
=1.4÷2.8
=0.5
400-14
=400-（）
=400-100
=300；
5.84×1.36+1.36×3.16+1.36
=1.36×（5.84+3.16+1）
=1.36×10
=13.6；

=
=[+-]×12
=[+1-]×12
=×12+1×12-×12
=8+12-3
=17．
分析：按四则运算顺序解答
点评：按四则运算法则解题，能用规律简算的可以简算．