1.280/14=40/( )= ( )2.700/25=( )/100=( )3.从4:15到4:30.分针旋转了( )度

问题描述:

1.280/14=40/( )= ( )
2.700/25=( )/100=( )
3.从4:15到4:30.分针旋转了( )度

1. 280/14=40/(2 )= ( 20 )
2. 700/25=(2800 )/100=(28 )

对,正确

2,20
2800,28

280/14=40/(2 )= (20 )
700/25=(2800 )/100=( 28 )

1.280/14=40/X
X=14X40/280
X=2
则280/14=40/2=20
2.同理:
700/25=X/100
X=700X100/25
X=2800
即:700/25=2800/100=28
3.90度

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