问题 解答题
计算题
(1)12-(-18)+(-7)-15
(2)-64÷3
1
5
×
5
8

(3)-63÷7+45÷(-9)
(4)(
5
12
+
2
3
-
3
4
)×(-12)

(5)(-
3
5
)×(+6)×(-10)×(-
1
4
)

(6)8+(-3)2×(-2)
(7)(-5)3×(-
3
5
)+32÷(-22)×(-1
1
4

(8)100+16÷(-2)4-
1
5
-|-100|
答案

(1)12-(-18)+(-7)-15

=12+18-7-15

=30-22

=8;

(2)-64÷3

1
5
×
5
8

=-64×

5
16
×
5
8

=-12.5;

(3)-63÷7+45÷(-9)

=-9-5

=-14;

(4)(

5
12
+
2
3
-
3
4
)×(-12)

=-

5
12
×12-
2
3
×12+
3
4
×12

=-5-8+9

=-4;

(5)(-

3
5
)×(+6)×(-10)×(-
1
4
)

=-3.6+2.5

=-1.1;

(6)8+(-3)2×(-2)

=8+9×(-2)

=8-18

=-10;

(7)(-5)3×(-

3
5
)+32÷(-22)×(-1
1
4

=(-125)×(-

3
5
)+32÷(-4)×(-
5
4

=75+8×

5
4

=75+10

=85;

(8)100+16÷(-2)4-

1
5
-|-100|

=100+16÷16-

1
5
-100

=100+1-

1
5
-100

=

4
5

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