□+□+△+○=16□+△+△+○=13□+△+○+○=11□=______△=______○=______.
□+□+△+○=16□+△+△+○=13□+△+○+○=11□=______△=______○=______.
△+○=60,○+□=51,□+△=39,□=______.△=______,○=______.
○+□=91△+□=63△+○=46○=______△=______□=______.
已知△+○=□,如果△+○+□=60,那么□=______.
已知□+□+△=16,□+△+△=14,那么□=______,△=______.
化学方程式中符号的含义:“+”______,“=”______,“↑”______,“△”______,“↓”_____
在算式□÷△=19…6中,除数最小是______这时被除数是______.
125×(4+8)=______×______+______×______.
填质数:21=______+______=______×______=______-______.
125×32×25=(______×______)×(______×______)
______÷______=34
______:16=9:______=0.75=______%