请人帮帮忙！我是二年级的小学生。请教几道简算题！（简算哦！把详细过程写下来）

Question

1、34.6-0.4乘以0.9-0.64=
2、0.216除以[(3.14+2.26)除以2]=
3、4.5除以[(0.5+0.75)乘以1.2]=
(详细过程哦！谢谢)

Answer 1

1.34.6-0.4*0.9-0.64
=34.6-0.36-0.64
=34.6-(0.36+0.64)
=34.6-1
=33.6

2.0.216/[(3.14+2.26)/2]
=0.216/[5.4/2]
=0.216*2/5.4
=0.432/5.4
=0.08

3.4.5/[(0.5+0.75)*1.2]
=4.5/[0.5*1.2+0.75*1.2]
=4.5/[0.6+0.9]
=4.5/1.5
=3

Answer 2

1.34.6-0.4*0.9-0.64
=34.6-0.36-0.64
=34.6-(0.36+0.64)
=34.6-1
=33.6

2.0.216/[(3.14+2.26)/2]
=0.216/[5.4/2]
=0.216*2/5.4
=0.432/5.4
=0.08

3.4.5/[(0.5+0.75)*1.2]
=4.5/[0.5*1.2+0.75*1.2]
=4.5/[0.6+0.9]
=4.5/1.5
=3
我打的不什怎么样，你想累死我！！！！！！！！

参考资料：我

Answer 3

1.34.2*0.26=8.892
2.0.216%3.2=0.6912
3.3

Answer 4

1、34.6-0.4乘以0.9-0.64=

34.6-0.4 x 0.9-0.64

=34.6-0.36-0.64

=34.6-(0.36+0.64)

=34.6-1

=33.6

2. 0.216÷[(3.14+2.26)÷2]
=0.216÷[5.4÷2]
=0.216×2÷5.4
=0.432÷5.4
=0.08

3.4.5÷[(0.5+0.75)×1.2]
=4.5÷[0.5×1.2+0.75×1.2]
=4.5÷[0.6+0.9]
=4.5÷1.5
=3

哈哈。虽然涐数学不好。但是做做二年级的题目应该还行。

Answer 5

34.6-0.4乘以0.9-0.64=30.14 0.216除以[(3.14+2.26)除以2]= 0.08
、4.5除以[(0.5+0.75)乘以1.2]= 3

Answer 6

1.34.6-0.4=34.2 34.2*(0.9-0.64)=8.892