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计算:(1)2+(-4)-(-2)+4(2)2÷(1- 1 3 )×(- 2 3 )(3)5-(-2) 2
计算:(1)2+(-4)-(-2)+4(2)2÷(1-13)×(-23)(3)5-(-2)2×2(4)(34-16-112)×(-48)...
计算:(1)2+(-4)-(-2)+4(2)2÷(1- 1 3 )×(- 2 3 )(3)5-(-2) 2 ×2(4)( 3 4 - 1 6 - 1 12 )×(-48)
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(1)2+(-4)-(-2)+4=2-4+2+4=4; (2)2÷(1-
(3)5-(-2) 2 ×2=5-4×2=5-8=-3; (4)(
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