计算:647-278+237.-数学

题目简介

计算:647-278+237.-数学

题目详情

计算:6
4
7
-
27
8
+2
3
7
题型:解答题难度:中档来源:不详

答案

6class="stub"4
7
-class="stub"27
8
+2class="stub"3
7

=6class="stub"4
7
+2class="stub"3
7
-class="stub"27
8

=9-class="stub"27
8

=class="stub"45
8

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