8.5×□+3×□-1.5×□=7.5,□=______.
8.5×□+3×□-1.5×□=7.5,□=______.
□+□+△+○=16□+△+△+○=13□+△+○+○=11□=______△=______○=______.
△+○=60,○+□=51,□+△=39,□=______.△=______,○=______.
○+□=91△+□=63△+○=46○=______△=______□=______.
已知□+□+△=16,□+△+△=14,那么□=______,△=______.
将0~9这十个数字分别填在右面的□里:□□×□=□□______,□□×□=□□______.
在算式□÷△=19…6中,除数最小是______这时被除数是______.
125×(4+8)=______×______+______×______.
已知△+○=□,如果△+○+□=60,那么□=______.
要使2.3×□+7.7×□=4.06,□代表的数是______.
填质数:21=______+______=______×______=______-______.
786×3□2=27□□72中,被乘数、乘数、积,这三个数和是______.