题目内容
计算:
(1)(-36
)÷(-9)
(2)-13+0.5×
÷(-
)2.
(1)(-36
| 9 |
| 11 |
(2)-13+0.5×
| 2 |
| 9 |
| 1 |
| 3 |
(1)(-36
)÷(-9)
=36
×
=(36+
)×
=36×
+
×
=4
(或
)
(注:方法不同,但答案正确也给分)
(2)-13+0.5×
÷(-
)2
=-1+
×
×9
=-1+1
=0.
| 9 |
| 11 |
=36
| 9 |
| 11 |
| 1 |
| 9 |
=(36+
| 9 |
| 11 |
| 1 |
| 9 |
=36×
| 1 |
| 9 |
| 9 |
| 11 |
| 1 |
| 9 |
=4
| 1 |
| 11 |
| 45 |
| 11 |
(注:方法不同,但答案正确也给分)
(2)-13+0.5×
| 2 |
| 9 |
| 1 |
| 3 |
=-1+
| 1 |
| 2 |
| 2 |
| 9 |
=-1+1
=0.
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