题目内容
计算
(1)4-(-5)+(-6)
(2)
÷(
-
)-
×(-4)2.
(1)4-(-5)+(-6)
(2)
| 7 |
| 9 |
| 2 |
| 3 |
| 1 |
| 5 |
| 1 |
| 3 |
(1)原式=4+5+(-6)=9-6=3;
(2)原式=
÷
-
×16=
×
-
=
-
=-
.
(2)原式=
| 7 |
| 9 |
| 7 |
| 15 |
| 1 |
| 3 |
| 7 |
| 9 |
| 15 |
| 7 |
| 16 |
| 3 |
| 5 |
| 3 |
| 16 |
| 3 |
| 11 |
| 3 |
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