题目内容
| 计算: |-7|+|4|= |
|
(-0.5)÷(-
|
-
|
|-(-2)|-(-|-
| ||||||||||||||||
-
|
10.01×8.99≈ |
|
25÷|-
|
-|-2|×|-
|
分析:|-7|+|4|=7+4,|-(-2)|-(-|-
|)=2+
,25÷|-
|=25÷
,-|-2|×|-
|=-2×
由此求解;
(-0.5)÷(-
)根据负数除以负数等于正数求解;
( ):
=
根据比与除法的关系求解.
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 5 |
| 1 |
| 5 |
(-0.5)÷(-
| 1 |
| 4 |
( ):
| 2 |
| 5 |
| 2 |
| 5 |
解答:解:
故答案为:11,
,2,
,2
,-
,90,
,50,-
.
| |-7|+|4|=11, |
|
(-0.5)÷(-
|
-
|
|-(-2)|-(-|-
| ||||||||||||||||||
-
|
10.01×8.99≈90, |
|
25÷|-
|
-|-2|×|-
|
| 3 |
| 2 |
| 1 |
| 4 |
| 1 |
| 2 |
| 13 |
| 10 |
| 4 |
| 25 |
| 2 |
| 5 |
点评:解决本题关键是理解绝对值的含义,弄清楚是正数还是负数,进而求解.
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