求圆锥的体积:底面半径3厘米,高1分米.
684+235=验算: 902﹣637=验算: 527+343=验算: 485+87=验算:
(1)从熊猫馆到飞禽馆最远要走多少米?(2)老虎馆到熊猫馆比老虎馆到飞禽馆近多少米?
口答:哥哥采了 个.
口算.20+50= 34+43= 78﹣54= 10+20+50= 99﹣78= 72+16= 90﹣40= 90﹣50+30= 6+43= 45+50= 48﹣5= 4380﹣20﹣30= 67﹣13= 23+45= 95﹣54= 60+30﹣50= .
12﹣5= 17﹣9= 6+8= 11﹣9=15﹣12+7= 4+30= 17+4= 14﹣5=38﹣8= 4+9﹣8= 16﹣7= 13﹣6=50+7= 15﹣8= 40﹣5+5= 15元﹣6元=14元7角﹣7角= 2元2角+8角=