计算(1)1+(-2)+|-2-3|-5-(-9)(2)113×(13-12)×311÷54(3)(512+23-34)×(-12)(4)0.25×(-2)3-[4÷(-23)2+1]+(-1)5.-数学
题文
计算 (1)1+(-2)+|-2-3|-5-(-9) (2)
(3)(
(4)0.25×(-2)3-[4÷(-
|
答案
(1)1+(-2)+|-2-3|-5-(-9) =1-2+5-5+9 =-1+0+9 =8; (2)
=
=
=1×(-
=-
(3)(
=-
|
题文
计算 (1)1+(-2)+|-2-3|-5-(-9) (2)
(3)(
(4)0.25×(-2)3-[4÷(-
|
答案
(1)1+(-2)+|-2-3|-5-(-9) =1-2+5-5+9 =-1+0+9 =8; (2)
=
=
=1×(-
=-
(3)(
=-
|