计算(1)22-(-4)+(-2)+4;(2)-1-2×(-3);(3)(-81)÷94×49÷(-136);(4)(79-56+34)×(-36);(5)0-32÷[(-2)3-(-4)];(6)(-3)2-[(-23)+(-14)]÷112;(7)-14÷(-5)2×(-53)+|0.8-1|;(-数学
题文
计算 (1)22-(-4)+(-2)+4; (2)-1-2×(-3); (3)(-81)÷
(4)(
(5)0-32÷[(-2)3-(-4)]; (6)(-3)2-[(-
(7)-14÷(-5)2×(-
(8)-3×(-
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答案
(1)22-(-4)+(-2)+4 =22+4-2+4 =30-2 =28; (2)-1-2×(-3) =-1+6 =5; (3)(-81)÷
=81×
=576; (4)(
=-
=-28+30-27 =-55+30 =-25; (5)0-32÷[(-2)3-(-4)] =0-9÷[(-8)-(-4)] =0-9÷(-4) =0+2.25 =2.25; (6)(-3)2-[(-
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