题目内容

【题目】计算(能简算的要简算)

÷(×÷+÷ 55×

×)÷ (0.75﹣)×(+) ()×

【答案】(1)÷(×)=

(2)÷+÷=

(3)55×=53

(4)(×)÷=3;

(5)(0.75﹣)×(+)=

(6)()×=

【解析】

试题分析:(1)先算小括号里面的乘法,再算小括号里面的减法,最后算除法;

(2)、(3)根据乘法分配律进行简算;

(4)先算小括号里面的乘法,再算小括号里面的减法,最后算除法;

(5)先算小括号里面的减法和加法,再算乘法;

(6)先算小括号里面的减法,再算乘法.

解:(1)÷(×

=÷(

=÷

=

(2)÷+÷

=×+×

=(+)×

=11×

=

(3)55×

=(54+1)×

=54×+1×

=53+

=53

(4)(×)÷

=()÷

=÷

=3;

(5)(0.75﹣)×(+

=×

=

(6)()×

=×

=

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