已知◇+◇+◇=75,□×◇=100,☆÷□=120,则☆=______.
已知◇+◇+◇=75,□×◇=100,☆÷□=120,则☆=______.
已知□+□+△=16,□+△+△=14,那么□=______,△=______.
已知a2b2+a2+b2+1=4ab,则a=______,b=______.
已知∠A=65°,则它的余角为______,补角为______.
计算圆的周长时,已知r,C=______;已知d,C=______.
已知△+○=□,如果△+○+□=60,那么□=______.
______÷______=34
125×(4+8)=______×______+______×______.
填质数:21=______+______=______×______=______-______.
3÷______=______÷24=75%=______折.
0.125=5:______=______%=______÷______.
已知x2-4y2=20,x+2y=5,则x=______,y=______.