题目内容

【题目】能简算的要简算.

17× +)×32 ×+× ××16

+× 44﹣72× [×(]÷ ÷(+

×16﹣×14+×70 +)×

【答案】944149

【解析】

试题分析:(1)先把17分解成16+1,再运用乘法分配律简算;

(2)(3)(9)(10)根据乘法分配律进行简算;

(4)根据乘法结合律进行简算;

(5)先算乘法,再算加法;

(6)先算乘法,再算减法;

(7)先算减法,再算乘法,最后算除法;

(8)先算加法,再算除法.

解:

(1)17×

=(16+1)×

=16×+1×

=9+

=9

(2)(+)×32

=×32+×32

=24+20

=44

(3)×+×

=×(+

=×1

=

(4)××16

=×(×16)

=×2

=

(5)+×

=+

=+

=

(6)44﹣72×

=44﹣30

=14

(7)[×(]÷

=[×]÷

=÷

=×

=

(8)÷(+

=÷(+

=÷

=×

=

(9)×16﹣×14+×70

=×(16﹣14+70)

=×72

=9

(10)(+)×

=×+×

=+

=+

=

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