33/22=()/66=66/() ()/4=36/16=72/() 7/()=14/()=35/15 14/6=()/
33/22=()/66=66/() ()/4=36/16=72/() 7/()=14/()=35/15 14/6=()/
33/22=()/66=66/() ()/4=36/16=72/() 7/()=14/()=35/15
计算:(+13 1/23)+(-55 1/33)+(+7 21/46)+(-14 5/66)=?
( )除以14=( )/35=4:7
计算(-11)-(-22)-(-33)-(-44)-(-55)-(-66)=______.
14分之()=21分之()=4:7=16除以()=35分之()
66×11+22×67=()
4*8=16 10*6=26 6*10=22 18*14=50 7*13=( )(找规律)
解比例:5:4=():五分之四 、2.6:16=():15 、 17:()=8:4 、 ():14=4:7
15-7=( )-( )=( )-( ) ( )-( )=12-6 =( )-( ) 16-9=( )-( )=( )-
1.280/14=40/( )= ( )
(+14)+(-4)+(-2)+(+26)+(-3)= (-83)+(+26)+(-41)+(+15)=