题目内容
计算:
(1)-2.5÷
×(-
);(2)-27÷2
×
÷(-24);
(3)(-
)×(-3
)÷(-1
)÷3×(-3
)÷(-1
)÷3;(4)-4×
÷(-
)×2;
(5)-5÷(-1
)×
×(-2
)÷7;(6)|-1
|÷
×
×|-
|.
(1)-2.5÷
| 5 |
| 8 |
| 1 |
| 4 |
| 1 |
| 4 |
| 4 |
| 9 |
(3)(-
| 3 |
| 5 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 2 |
| 1 |
| 2 |
(5)-5÷(-1
| 2 |
| 7 |
| 4 |
| 5 |
| 1 |
| 4 |
| 1 |
| 8 |
| 3 |
| 4 |
| 4 |
| 3 |
| 1 |
| 2 |
(1)-2.5÷
×(-
)=
×
×
=1;
(2)-27÷2
×
÷(-24)=27×
×
×
=
;
(3)(-
)×(-3
)÷(-1
)÷3×(-3
)÷(-1
)÷3=-
×
×
×
=-
;
(4)-4×
÷(-
)×2=2×2×2=8;
(5)-5÷(-1
)×
×(-2
)÷7=-5×
×
×
×
=-1;
(6)|-1
|÷
×
×|-
|=
×
×
×
=1.
| 5 |
| 8 |
| 1 |
| 4 |
| 5 |
| 2 |
| 8 |
| 5 |
| 1 |
| 4 |
(2)-27÷2
| 1 |
| 4 |
| 4 |
| 9 |
| 4 |
| 9 |
| 4 |
| 9 |
| 1 |
| 24 |
| 2 |
| 9 |
(3)(-
| 3 |
| 5 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 2 |
| 1 |
| 4 |
| 3 |
| 5 |
| 7 |
| 2 |
| 4 |
| 5 |
| 1 |
| 3 |
| 14 |
| 25 |
(4)-4×
| 1 |
| 2 |
| 1 |
| 2 |
(5)-5÷(-1
| 2 |
| 7 |
| 4 |
| 5 |
| 1 |
| 4 |
| 7 |
| 9 |
| 4 |
| 5 |
| 9 |
| 4 |
| 1 |
| 7 |
(6)|-1
| 1 |
| 8 |
| 3 |
| 4 |
| 4 |
| 3 |
| 1 |
| 2 |
| 9 |
| 8 |
| 4 |
| 3 |
| 4 |
| 3 |
| 1 |
| 2 |
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