第46页

信息发布者：
15
4
25
4
9
11
16
125
×
8
+
125
×
4
12
×
72
+
28
>
=
<
=
=2178+22×1
=2178+22
=2200
=22×100
=2200
=432+18×26
=432+468
=900
=18×50
=900
=720+35×16
=720+560
=1280
=80×16
=1280
a×(b+c)=a×b+a×c
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