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
答
1. 280/14=40/(2 )= ( 20 )
2. 700/25=(2800 )/100=(28 )
答
对,正确
答
2,20
2800,28
答
280/14=40/(2 )= (20 )
700/25=(2800 )/100=( 28 )
答
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
答
vbfbgdf