电子课本网 第99页

第99页

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=927÷(630÷70)
=927÷9
=103
5
=
(217-35)÷(4+9)=14
160÷[4×(8+12)]=2
②④
(300÷20+5)×2
300÷(20+5×2)
1
=780+35
=815
=(934-560)÷17
=374÷17
=22
=16×(966÷42)
=16×23
=368