问题
解答题
计算 (1)(-3)+(-4)-(+11)-(-9) (2)-0.5-(-3
(3)(
(4)-14-(-5
|
答案
(1)(-3)+(-4)-(+11)-(-9)
=-3-4-11+9
=-18+9
=-9;
(2)-0.5-(-3
)+2.75-71 4 1 2
=(-0.5-7
)+(3.25+2.75)1 2
=-8+6
=-2;
(3)(
+1 2
-5 6
)×(-36)7 12
=-
×36-1 2
×36+5 6
×367 12
=-18-30+21
=-27;
(4)-14-(-5
)×1 2
+(-2)3÷|-32+1|4 11
=-1+2-8÷|-9+1|
=-1+2-8÷8
=-1+2-1
=0.