计算:(1)312+(-12)-(-13)+223(2)4?(?2)÷13×(?3)(3)?2×(?12)2+|?(?2)|3?(?12)(4)-32-[-5+
计算:(1)312+(-12)-(-13)+223(2)4?(?2)÷13×(?3)(3)?2×(?12)2+|?(?2)|3?(?12)(4)-32-[-5+(1-0....
计算:(1)312+(-12)-(-13)+223(2)4?(?2)÷13×(?3)(3)?2×(?12)2+|?(?2)|3?(?12)(4)-32-[-5+(1-0.6×35)÷(-3)2].
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啊陌0026
推荐于2016-05-19
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(1)3
+(-
)-(-
)+2
=3
+(-
)+
+2
=3+3
=6;
(2)4-(-2)÷
×(-3)
=4-(-2)×3×(-3)
=4-18
=4+(-18)
=-(18-4)
=-14;
(3)-2×(-
)
2+|-(-2)|
3-(-
)
=-2×
+2
3+
=-
+8+
=(-
+
)+8
=8;
(4)-3
2-[-5+(1-0.6×
)÷(-3)
2]
=-9-[-5+(1-
×
)÷9]
=-9-(-5+
×
)
=-9+5-
=-4-
.
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