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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