题目内容

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|
(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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