摘要:1.计算:(1)(y-)(y+)= , = .
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计算:
(1)-20+(-18)-12+10;
(2)(-
)+(-
)-3;
(3)(
-
-
)×(-48);
(4)-2.5×17×(-4)×(-0.1);
(5) 33.1-10.7-(-22.9)-|-
|;
(6) (-36)÷4-5×(-1.2);
(7)4
×[-32×(-
)2+0.8]÷(-
);
(8)-22-|-6|+2-3×(-
).
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(1)-20+(-18)-12+10;
(2)(-
| 3 |
| 4 |
| 1 |
| 4 |
(3)(
| 3 |
| 4 |
| 1 |
| 6 |
| 1 |
| 12 |
(4)-2.5×17×(-4)×(-0.1);
(5) 33.1-10.7-(-22.9)-|-
| 23 |
| 10 |
(6) (-36)÷4-5×(-1.2);
(7)4
| 1 |
| 2 |
| 1 |
| 3 |
| 3 |
| 5 |
(8)-22-|-6|+2-3×(-
| 1 |
| 3 |
计算:
(1)-20+(-14)-(-18)+13;
(2)
÷(-
)-
×(-6);
(3)(-
-
+
)÷(-
);
(4)-22+(-2)2-|-
|×(-10)2.
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(1)-20+(-14)-(-18)+13;
(2)
| 7 |
| 4 |
| 7 |
| 8 |
| 2 |
| 3 |
(3)(-
| 3 |
| 4 |
| 7 |
| 6 |
| 11 |
| 12 |
| 1 |
| 24 |
(4)-22+(-2)2-|-
| 1 |
| 4 |