摘要:(1)1/3-1/2-3/4+2/3 ÷1/9 +5×2 ×3 (6)-14-2]
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计算:
(1)(-
)-7-2+8-(
);
(2)3-[-(-3)-12]+8-(9-10);
(3)
;
(4)-3×(-2)2-(-1)100÷0.25;
(5)
;
(6)99
×(-34)(用简便方法计算);
(7)-14-[2-(1-
×0.5)]×[32-(-2)2];
(8)根据输入的有理数,按右图中程序计算,并把输出的结果填入表内:
| 输入 | 输出 |
| -4 | |
| 1 |
解答下列各题:
(1)(-12)-5+(-14)-(-39)
(2)3
-(-
)+2
+(-
)
(3)
-|-1
|-(+2
)-(-2.75)
(4)(-1)+2+(-3)+4+…+(-99)+100.
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(1)(-12)-5+(-14)-(-39)
(2)3
| 1 |
| 2 |
| 1 |
| 3 |
| 2 |
| 3 |
| 1 |
| 2 |
(3)
| 2 |
| 5 |
| 1 |
| 2 |
| 1 |
| 4 |
(4)(-1)+2+(-3)+4+…+(-99)+100.