题目内容
计算:
(1)-3+5.3+7-5.3
(2)(-2)×
÷(-
)×4
(3)-16-|-5|+2×(-
)2
(4)(
-
)÷(-
)+(-3)3÷(-3)
(5)-
+
÷[(-1
)3+(-
)2]×|-2.52|-
.
(1)-3+5.3+7-5.3
(2)(-2)×
| 3 |
| 2 |
| 3 |
| 4 |
(3)-16-|-5|+2×(-
| 1 |
| 2 |
(4)(
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 12 |
(5)-
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
(1)-3+5.3+7-5.3
=-8.3+12.3
=4;
(2)(-2)×
÷(-
)×4
=2×
×
×4
=16;
(3)-16-|-5|+2×(-
)2
=-1-5+2×
=-1-5+
=-5
;
(4)(
-
)÷(-
)+(-3)3÷(-3)
=﹙
-
﹚×﹙-12﹚+﹙-3﹚2
=-4+3+9
=8;
(5)-
+
÷[(-1
)3+(-
)2]×|-2.52|-
=-
+
÷[-
+
]×
-
=-
+
×﹙-
﹚×
-
=-
-1-
=-2.
=-8.3+12.3
=4;
(2)(-2)×
| 3 |
| 2 |
| 3 |
| 4 |
=2×
| 3 |
| 2 |
| 4 |
| 3 |
=16;
(3)-16-|-5|+2×(-
| 1 |
| 2 |
=-1-5+2×
| 1 |
| 4 |
=-1-5+
| 1 |
| 2 |
=-5
| 1 |
| 2 |
(4)(
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 12 |
=﹙
| 1 |
| 3 |
| 1 |
| 4 |
=-4+3+9
=8;
(5)-
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
=-
| 1 |
| 2 |
| 1 |
| 2 |
| 27 |
| 8 |
| 1 |
| 4 |
| 25 |
| 4 |
| 1 |
| 2 |
=-
| 1 |
| 2 |
| 1 |
| 2 |
| 8 |
| 25 |
| 25 |
| 4 |
| 1 |
| 2 |
=-
| 1 |
| 2 |
| 1 |
| 2 |
=-2.
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