09:4909:49整十数、整百数除以一位数09:4909:49口答:•20里面有()个十;•7个十是();•600里面有()个百;•8个百是();•120里面有()个十;•56个十是()。27068001256009:4909:49口算:36483931292787222343909:4909:49把60支铅笔平均分给3个班。每班分得多少支?09:4909:49试一试:360009:4909:49算一算,猜一猜:26260260048480480039390390032330203030030020009:4909:49把120支铅笔平均分给3个班每班分得多少支?120÷3=09:4909:49算一算:32732705455450630630099099055009:4909:49口算下面各题:240044002800721062408560420053009900200100400304070506010009:4909:49连一连:2803150972050408054007350520009:4909:49大米的千克数是小米的多少倍?20÷2=10答:大米的千克数是小米的10倍。09:4909:4940个同学打乒乓球。都参加单打,可以分成多少组?都参加双打呢?40÷2=20(组)40÷4=10(组)答:单打可以分成20组,双打可以分成10组。09:4909:49120÷6=20答:涂色部分表示20.