四年级下册简便计算大全

2024-11-25 12:46:59
推荐回答(1个)
回答1:

158+262+138
375+219+381+225
5001-247-1021-232
(181+2564)+2719
378+44+114+242+222
276+228+353+219
(375+1034)+(966+125)
(2130+783+270)+1017
99+999+9999+99999