计算:(1)1-(-2)+8+(-3)-(+8)(2)-2+2÷(-12)×2(3)(1-16+34)÷(-148)(4)-22×5-(-2)3÷4.-数学

题目简介

计算:(1)1-(-2)+8+(-3)-(+8)(2)-2+2÷(-12)×2(3)(1-16+34)÷(-148)(4)-22×5-(-2)3÷4.-数学

题目详情

计算:(1)1-(-2)+8+(-3)-(+8)
(2)-2+2÷(-
1
2
)×2

(3)(1-
1
6
+
3
4
)÷(-
1
48
)

(4)-22×5-(-2)3÷4.
题型:解答题难度:中档来源:不详

答案

(1)1-(-2)+8+(-3)-(+8)
=1+2+8-3-8
=0;                 

(2)-2+2÷(-class="stub"1
2
)×2
=-2+2×(-2)×2
=-2-8
=-10;

(3)(1-class="stub"1
6
+class="stub"3
4
)÷(-class="stub"1
48
)

=(1-class="stub"1
6
+class="stub"3
4
)×(-48)
=1×(-48)-class="stub"1
6
×(-48)+class="stub"3
4
×(-48)
=-48+8-36 
=-76;

(4)-22×5-(-2)3÷4
=-4×5+8÷4   
=-20+2    
=-18.

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