题目内容
计算:(1)(4
-3
+1
)÷(-1
);
(2)(-1)2008+(-3)2×|-
|-(-4)3÷(-2)5.
| 2 |
| 3 |
| 1 |
| 2 |
| 1 |
| 48 |
| 1 |
| 6 |
(2)(-1)2008+(-3)2×|-
| 1 |
| 8 |
(1)原式=(
-
+
)×(-
)
=-(
×
-
×
+
×
)
=-(4-3+
)
=-
;
(2)原式=1+9×
-(-64)÷(-32)
=1+
-2
=
.
| 14 |
| 3 |
| 7 |
| 2 |
| 49 |
| 48 |
| 6 |
| 7 |
=-(
| 14 |
| 3 |
| 6 |
| 7 |
| 7 |
| 2 |
| 6 |
| 7 |
| 49 |
| 48 |
| 6 |
| 7 |
=-(4-3+
| 7 |
| 8 |
=-
| 15 |
| 8 |
(2)原式=1+9×
| 1 |
| 8 |
=1+
| 9 |
| 8 |
=
| 1 |
| 8 |
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