问题
填空题
6:2=21:______;
1.6:4=______:2.5.
答案
6:2=21:( )
6×( )=21×2
6×( )=42
( )=7
1.6:4=( ):2.5
4×( )=1.6×2.5
4×( )=3
( )=3 4
故填7,
.3 4
6:2=21:______;
1.6:4=______:2.5.
6:2=21:( )
6×( )=21×2
6×( )=42
( )=7
1.6:4=( ):2.5
4×( )=1.6×2.5
4×( )=3
( )=3 4
故填7,
.3 4