课件23张PPT。两位数加一位数
(进位)4+9=135+9=146+8=146+4=108+3=119+7=165+7=127+3=108+5=136+6=128+9=1740+ 23 =30+18=634840160250+ 24 =20+35=745550370245+2=3+66=477695 24096027+1=4+32=288367 1206308210301040401067132013333313说说怎么算的。47+3=5+58=36+6=10405012304213506312121212124262921050709015554585101010101545+3 ( )十多34+9( )十多34+2 ( )十多45+6 ( )十多四 三 四 五 40 81113 640303007182930415263748596