第107页

信息发布者：
100
350
170
75
26
180
3200
12
13
16

验算：
验算：
=360÷(15×2)
=360÷30
=12
=560÷7÷5
=80÷5
=16
=720÷9÷5
=80÷5
=16
=4900÷(25×4)
=4900÷100
=49
=900+8
=908


3
4
7,8,9
=17
=21......19
=16......41
=283......10
=36+16+36
=88
=(46+27)×23
=73×23
=1679
=(12-5)×240
=7×240
=1680
=(196-177)×97
=19×97
=1843
=204÷(180÷15)
=204÷12
=17
上一页 下一页