问题
解答题
计算题 (1)23-37+3-52 (2)(
(3)(1-
(4)-22÷(-4)3+|0.8-1|×(2
|
答案
(1)原式=23+3-37-52=26-89=-63;
(2)原式=
×30×(-5)=1 6
×30×5=30;1 6
(3)原式=-48+
×48-1 6
×48=-48+8-36=-84+8=-76;3 4
(4)原式=-4÷(-64)+0.2×25 4
=
+1 16 5 4
=
.21 16