问题 解答题
计算:
(1)-1-1÷32×
1
32
+2;
(2)(-3)×(-2)2-(-1)99÷
1
2

(3)(-10)2-5×(-3×2)2+23×10.
答案

(1)-1-1÷32×

1
32
+2

=-1-1×

1
9
×
1
9
+2

=-1-

1
81
+2

=-

81+1-162
81

=

80
81

(2)(-3)×(-2)2-(-1)99÷

1
2

=(-3)×4-(-1)×2

=-12-(-2)

=-12+2

=-10;

(3)(-10)2-5×(-3×2)2+23×10

=100-5×(-6)2+8×10

=100-5×36+80

=100-180+80

=0.

单项选择题
解答题