题目内容
计算,能简算的要简算.
÷9+
×
1k×99+1k.
| 3 |
| 17 |
| 1 |
| 9 |
| 1k |
| 17 |
(1)
÷x+
×
,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(2)12×xx+12,
=(xx+1)×12,
=100×12,
=1200.
| 上 |
| 18 |
| 1 |
| x |
| 12 |
| 18 |
=
| 上 |
| 18 |
| 1 |
| x |
| 1 |
| x |
| 12 |
| 18 |
=(
| 上 |
| 18 |
| 12 |
| 18 |
| 1 |
| x |
=1×
| 1 |
| x |
=
| 1 |
| x |
(2)12×xx+12,
=(xx+1)×12,
=100×12,
=1200.
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