15-718+15-11184.2÷1.5-1.5×0.6[2-(23-12)]÷1112(56-34)÷(314+27)1724×34+1724÷489×[1516+(716-14)÷12].-数学
题文
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答案
(1)15-
=15-(
=15-1+
=14
(2)4.2÷1.5-1.5×0.6, =2.8-0.9, =1.9; (3)[2-(
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题文
|
答案
(1)15-
=15-(
=15-1+
=14
(2)4.2÷1.5-1.5×0.6, =2.8-0.9, =1.9; (3)[2-(
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