问题
解答题
(1)-
(2)(-81)÷2
(3)
(4)-24+(3-7)2-2×(-12) (5)(-0.3)2÷(-0.9)-|(-3)2-22| (6)-12-|0.5-
|
答案
(1)原式=6-
+1 2 1 4
=5
;3 4
(2)原式=-81×
×(-4 9
)×4 9 1 16
=1;
(3)原式=(-
-2 5
)×3 5 4 5
=-
;4 5
(4)原式=-16+16+2
=-2;
(5)原式=0.09÷(-0.9)-5
=-0.1-5
=-5.1;
(6)原式=-1-
×3×251 6
=-
.27 2