题目内容
计算:
(1)-6-(-9)+|-3|+(-4)
(2)(-
+
-
)×(-48)
(3)25×
-(-25)×
+25×(-
)
(4)-14-(1-0.5)×
×[10-(-2)2]-(-1)3.
(1)-6-(-9)+|-3|+(-4)
(2)(-
| 1 |
| 6 |
| 3 |
| 4 |
| 1 |
| 12 |
(3)25×
| 3 |
| 4 |
| 1 |
| 2 |
| 1 |
| 4 |
(4)-14-(1-0.5)×
| 1 |
| 3 |
(1)原式=-6+9+3-4
=3+3-4
=2;
(2)原式=(-
)×(-48)+
×(-48)-
×(-48)
=8-36+4
=-24;
(3)原式=25×(
+
-
)
=25×1
=25;
(4)原式=-1-
×
×6+1
=-1-
×6+1
=-1-1+1
=-1.
=3+3-4
=2;
(2)原式=(-
| 1 |
| 6 |
| 3 |
| 4 |
| 1 |
| 12 |
=8-36+4
=-24;
(3)原式=25×(
| 3 |
| 4 |
| 1 |
| 2 |
| 1 |
| 4 |
=25×1
=25;
(4)原式=-1-
| 1 |
| 2 |
| 1 |
| 3 |
=-1-
| 1 |
| 6 |
=-1-1+1
=-1.
练习册系列答案
相关题目