题目内容
计算
(1)(-2)3÷8-2×(-3)-(-1)2012
(2)-
×(-2)2-(-
)×42.
(1)(-2)3÷8-2×(-3)-(-1)2012
(2)-
1 |
4 |
1 |
2 |
(1)(-2)3÷8-2×(-3)-(-1)2012
=(-8)÷8-(-6)-1
=-1+6-1
=4;
(2)-
×(-2)2-(-
)×42
=-
×4-(-
)×16
=-1-(-8)
=-1+8
=7.
=(-8)÷8-(-6)-1
=-1+6-1
=4;
(2)-
1 |
4 |
1 |
2 |
=-
1 |
4 |
1 |
2 |
=-1-(-8)
=-1+8
=7.
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