计算:(1)-23-(-12)-(-14)-12(2)(-81)÷94×49÷(-16)(3)(-56+13+12-34)×(-62)(用简便运算)(4)-24+3×(-1)4-(-2)3.-数学

题目简介

计算:(1)-23-(-12)-(-14)-12(2)(-81)÷94×49÷(-16)(3)(-56+13+12-34)×(-62)(用简便运算)(4)-24+3×(-1)4-(-2)3.-数学

题目详情

计算:
(1)-
2
3
-(-
1
2
)-(-
1
4
)-
1
2

(2)(-81)÷
9
4
×
4
9
÷(-16)

(3)(-
5
6
+
1
3
+
1
2
-
3
4
)×(-62)
(用简便运算) 
(4)-24+3×(-1)4-(-2)3
题型:解答题难度:中档来源:不详

答案

(1)原式=-class="stub"2
3
+class="stub"1
2
+class="stub"1
4
-class="stub"1
2
=-class="stub"5
12

(2)原式=-81×class="stub"4
9
×class="stub"4
9
×(-class="stub"1
16
)=1;
(3)原式=(class="stub"5
6
+class="stub"1
3
+class="stub"1
2
-class="stub"3
4
)×(-36)=-30-12-18+27=-33;
(4)原式=-16+3+8=-5.

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