问题
解答题
计算: (1)[1
(2)(-10)+8×(-2)2-(-4)×(-3); (3)-0.252÷(-0.5)3+(
(4)-3×(-
(5)(-2)3-1
|
答案
(1)原式=(
-15+4-14)×(-5 13
)1 5
=(
-25)×(-5 13
)1 5
=4
;12 13
(2)原式=-10+32-12=10;
(3)原式=-
÷(-1 16
)+(-1 8
)3 8
=
-1 2 3 8
=
;1 8
(4)原式=-3×
-4×4 9
-8×1 3 9 4
=-
-188 3
=-20
;2 3
(5)原式=-8+
×7 4
+88 21
=-8+
+82 3
=
.2 3