> 数学 >
计算下面两题,能简算的要简算.(十七分之九除以七加七分之一乘十七分之八) (50-1/2)*10.6-49.5*0.6
人气:420 ℃ 时间:2019-08-19 18:41:05
解答
9/17÷7+1/7×8/17
=9/17×1/7+1/7×8/17
=(917+8/17)×1/7
=1×1/7
=1/7
(50-1/2)*10.6-49.5*0.6
=49.5*10.6-49.5*0.6
=49.5*(10.6-0.6)
=49.5*10
=495
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