题目内容

【题目】脱式计算,能简算的要简算。

①0.575×29+2.9×4.25

÷

③36÷( +

÷125%

×[ -( )]

⑥2016×

【答案】29 2014

【解析】

(1)根据乘法结合律进行计算即可;;

(2)先算括号里的加法,再算除法,最后算减法;

(3)先算括号里的加法,再算除法;

(4)根据乘法结合律进行计算即可;

(5)先算括号里的,再算乘法;

(6)先把2016写成2015+1,在根据分配率计算即可.

①0.575×29+2.9×4.25

=(0.575+0.425)×29

=1×29

=29

÷

= ×

= ×

=

=

=

③36÷( +

=36÷( +

=36÷

=36×

=

÷125%

= + ×

= ×( +

= ×1

=

×[ -( )]

= ×( - +

= ×

=

⑥2016×

=(2015+1)×

=2015× +

=2014+

=2014

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