问题
解答题
计算: (1)(-2)3+2×(-3); (2)17-23÷(-2)×3; (3)2×(-5)+23-3÷
(4)[1
(5)7×(-2
(6)-0.752÷(-1
|
答案
(1)原式=-8-6=-14;
(2)原式=17-8×(-
)×3=17+4×3=17+12=29;1 2
(3)原式=-10+8-6=-8;
(4)原式=(1
-9-4+18)÷5=(1 24
+5)÷5=5 24
+1=11 24
;1 24
(5)原式=(7+3-5)×(-2
)=5×(-2 5
)=-12;12 5
(6)原式=-
÷(-9 16
)-1×(-27 8
)1 6
=
×9 16
+8 27 1 6
=
.1 2