计算:(1)-12011-(0.5-1)×13×[2-(-3)2];(2)(-47.65)×2611+(-37.15)×(-2611)+10.5×(-7511).-数学

题目简介

计算:(1)-12011-(0.5-1)×13×[2-(-3)2];(2)(-47.65)×2611+(-37.15)×(-2611)+10.5×(-7511).-数学

题目详情

计算:
(1)-12011-(0.5-1)×
1
3
×[2-(-3)2];
(2)(-47.65)×2
6
11
+(-37.15)×(-2
6
11
)+10.5×(-7
5
11
).
题型:解答题难度:中档来源:不详

答案

(1)原式=-1-(-class="stub"1
2
)×class="stub"1
3
×(-7)=-1-class="stub"7
6
=-2class="stub"1
6

(2)原式=2class="stub"6
11
×(-47.65+37.15)+10.5×(-7class="stub"5
11

=-10.5×2class="stub"6
11
+10.5×(-7class="stub"5
11

=-10.5×(2class="stub"6
11
+7class="stub"5
11

=-10.5×10=-105.

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