题目内容
计算:
(1)17-8÷(-2)+4×(-3)2;
(2)(-4
)-(-5
)+(-4
)-(+3
);
(3)(
-
+
-
)×(-48);
(4)|-
|÷(
-
)-
×(-4)2.
(1)17-8÷(-2)+4×(-3)2;
(2)(-4
| 7 |
| 8 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 8 |
(3)(
| 11 |
| 12 |
| 7 |
| 6 |
| 3 |
| 4 |
| 13 |
| 24 |
(4)|-
| 7 |
| 9 |
| 2 |
| 3 |
| 1 |
| 5 |
| 1 |
| 3 |
(1)17-8÷(-2)+4×(-3)2
=17-(-4)+4×9
=17+4+36
=57;
(2)(-4
)-(-5
)+(-4
)-(+3
)
=-4
+5
-4
-3
=(-4
-4
-3
)+5
=-12
+5
=-6
;
(3)(
-
+
-
)×(-48)
=-44-(-56)+(-36)-(-26)
=-44+56-36+26
=2;
(4)|-
|÷(
-
)-
×(-4)2
=
÷
-
×16
=
-
=-
.
=17-(-4)+4×9
=17+4+36
=57;
(2)(-4
| 7 |
| 8 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 8 |
=-4
| 7 |
| 8 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 8 |
=(-4
| 7 |
| 8 |
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 2 |
=-12
| 1 |
| 4 |
| 1 |
| 2 |
| 3 |
| 4 |
(3)(
| 11 |
| 12 |
| 7 |
| 6 |
| 3 |
| 4 |
| 13 |
| 24 |
=-44-(-56)+(-36)-(-26)
=-44+56-36+26
=2;
(4)|-
| 7 |
| 9 |
| 2 |
| 3 |
| 1 |
| 5 |
| 1 |
| 3 |
=
| 7 |
| 9 |
| 7 |
| 15 |
| 1 |
| 3 |
=
| 5 |
| 3 |
| 16 |
| 3 |
| 11 |
| 3 |
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