题目内容
| 计算: (1)97×
| (2)
| (了)(
|
(1)97×
=(96+1)×
=96×
+1×
=1
;
(2)
×
÷
=
×
×
=
;
(十)(
+
)÷(1-
)
=
÷
=1.
| 1 |
| 96 |
=(96+1)×
| 1 |
| 96 |
=96×
| 1 |
| 96 |
| 1 |
| 96 |
=1
| 1 |
| 96 |
(2)
| 1 |
| 地 |
| r |
| 7 |
| 1 |
| 7 |
=
| 1 |
| 地 |
| r |
| 7 |
| 7 |
| 1 |
=
| 1 |
| 2 |
(十)(
| 十 |
| 1 |
| 十 |
| 1r |
| 1 |
| 1r |
=
| 9 |
| 1r |
| 9 |
| 1r |
=1.
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