题目内容
计算(1)(2
)×(-
)×(-3
);
(2)(-5
)×(+1
)×(-2
);
(3)(-0.1)×(-0.001)×(-100)×(-1000);
(4)(6
-8
)×1
;
(5)2÷(-
)×
÷(-5
);
(6)-1+5÷(-
)×(-6).
| 1 |
| 2 |
| 1 |
| 5 |
| 1 |
| 3 |
(2)(-5
| 1 |
| 3 |
| 7 |
| 8 |
| 1 |
| 5 |
(3)(-0.1)×(-0.001)×(-100)×(-1000);
(4)(6
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 2 |
(5)2÷(-
| 3 |
| 7 |
| 4 |
| 7 |
| 1 |
| 7 |
(6)-1+5÷(-
| 1 |
| 6 |
(1)(2
)×(-
)×(-3
)=
×
×
=
;
(2)(-5
)×(+1
)×(-2
)=
×
×
=22;
(3)(-0.1)×(-0.001)×(-100)×(-1000)=0.1×100×0.001×1000=10;
(4)(6
-8
)×1
=
×
-
×
=
-
=-
;
(5)2÷(-
)×
÷(-5
)=2×
×
×
=
;
(6)-1+5÷(-
)×(-6)-1+5×6×6=-1+180=-179.
| 1 |
| 2 |
| 1 |
| 5 |
| 1 |
| 3 |
| 5 |
| 2 |
| 1 |
| 5 |
| 10 |
| 3 |
| 5 |
| 3 |
(2)(-5
| 1 |
| 3 |
| 7 |
| 8 |
| 1 |
| 5 |
| 16 |
| 3 |
| 15 |
| 8 |
| 11 |
| 5 |
(3)(-0.1)×(-0.001)×(-100)×(-1000)=0.1×100×0.001×1000=10;
(4)(6
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 2 |
| 19 |
| 3 |
| 3 |
| 2 |
| 33 |
| 4 |
| 3 |
| 2 |
| 19 |
| 2 |
| 99 |
| 8 |
| 23 |
| 8 |
(5)2÷(-
| 3 |
| 7 |
| 4 |
| 7 |
| 1 |
| 7 |
| 7 |
| 3 |
| 4 |
| 7 |
| 7 |
| 36 |
| 14 |
| 27 |
(6)-1+5÷(-
| 1 |
| 6 |
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