计算(1)-4÷23-(-23)×(-30)(2)(-34-59+712)÷136(3)|-79|÷(23-15)-13×(-4)2(4)-12-[137+(-12)÷6]2×(-34)3.-数学

题目简介

计算(1)-4÷23-(-23)×(-30)(2)(-34-59+712)÷136(3)|-79|÷(23-15)-13×(-4)2(4)-12-[137+(-12)÷6]2×(-34)3.-数学

题目详情

计算
(1)-4÷
2
3
-(-
2
3
)×(-30)

(2)(-
3
4
-
5
9
+
7
12
1
36

(3)|-
7
9
|÷(
2
3
-
1
5
)-
1
3
×(-4)2

(4)-12-[1
3
7
+(-12)÷6]2×(-
3
4
)3
题型:解答题难度:中档来源:不详

答案

(1)原式=-4×class="stub"3
2
-class="stub"2
3
×30=-6-20=-26;
(2)原式=(-class="stub"3
4
-class="stub"5
9
+class="stub"7
12
)×36=-class="stub"3
4
×36-class="stub"5
9
×36+class="stub"7
12
×36=-27-20+21=-26;
(3)原式=class="stub"7
9
÷class="stub"7
15
-class="stub"1
3
×16=class="stub"7
9
×class="stub"15
7
-class="stub"16
3
=class="stub"5
3
-class="stub"16
3
=-class="stub"11
3

(4)原式=-1-(class="stub"10
7
-2)2×(-class="stub"27
64
)=-1-class="stub"16
49
×(-class="stub"27
64
)=-1+class="stub"27
196
=-class="stub"169
196

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