问题
解答题
你来算一算!千万别出错! (1)-
(2)-
(3)(-2)3×0.5-(-1.6)2÷(-2)2; (4)-14÷(-5)2×(-
|
答案
(1)原式=1-
+5 6
=1 2
+1 6
=1 2
;2 3
(2)原式=-
×33 5
×1 6
×(-15 11
)=4;8 3
(3)原式=-8×
-1 2
×64 25
=4-1 4
=16 25
=-8×116 25
-1 2
×64 25
=-4-1 4
=-416 25
;16 25
(4)原式=-1×
×(-1 25
)+5 3
=1 5
+1 15
=3 15
.4 15