题目内容
计算题:
(1)-3-(-4)+7;
(2)8×(-
)÷|-16|;
(3)(
-
-
)×(-24);
(4)(-2)2-|-6|+2-3×(-
);
(5)4
×[-32×(-
)2+0.8]÷(-
).
(1)-3-(-4)+7;
(2)8×(-
| 4 |
| 5 |
(3)(
| 3 |
| 8 |
| 1 |
| 6 |
| 3 |
| 4 |
(4)(-2)2-|-6|+2-3×(-
| 1 |
| 3 |
(5)4
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 5 |
(1)原式=-3+4+7
=-3+11
=8;
(2)原式=-8×
÷16
=-8×
×
=-
;
(3)原式=-
×24+
×24+
×24
=-9+4+18
=13
(4)原式=4-6+2+1
=7-6
=1
(5)原式=
×[-9×
+0.8]×(-
)
=
×[-1+0.8]×(-
)
=
×[-
]×(-
)
=
.
=-3+11
=8;
(2)原式=-8×
| 4 |
| 5 |
=-8×
| 4 |
| 5 |
| 1 |
| 16 |
=-
| 2 |
| 5 |
(3)原式=-
| 3 |
| 8 |
| 1 |
| 6 |
| 3 |
| 4 |
=-9+4+18
=13
(4)原式=4-6+2+1
=7-6
=1
(5)原式=
| 9 |
| 2 |
| 1 |
| 9 |
| 5 |
| 3 |
=
| 9 |
| 2 |
| 5 |
| 3 |
=
| 9 |
| 2 |
| 1 |
| 5 |
| 5 |
| 3 |
=
| 3 |
| 2 |
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