二年级 1000 以的加、减法笔算分钟)225+214=521+26=97+535=362-138=479-254=450-242=198+157=283+76=349+231=400-206=574-390=56+238=679-497=835-209=374+226=666+286=702-173=575+322=417-223=806+95=145-68=548+452=85+263=293-56=560+380=725-388=292-187=366+207=900-405=629+240=927-254=628-255=223+404=85+37=602-336=300-185=900-461=319+250=326+588=800-695=663+282=459-68=208-129=239+571=165+78=755+155=556-379=503+108=702-564=205+89=409+394=340-153=745-679=549+867=528-89=301-84=726+598=500-453=501+389=963-804=169+450=800-695=34+678=517-348=二年级 1000 以的加、减法(分钟421-348=800-695=737-520=800-507=700-453=501+389=963-804=169+450=34+678=517-348=405-228=746+163=352+135=267+395=343+588=474+209=115+267=485+637=602-336=300-185=900-461=459-68=556-379=340-153=319+250=326+588=800-695=663+282=208-129=239+571=165+78=755+155=754-592=437+142=293-156=47+216=503+108=702-564=205+89=409+394=439+557=666+286=702-173=575+322=854-592=437+142=293-156=112+847=503+108=702-564=205+89=409+394=745-679=549+867=528-89=301-84=629+240=927-254=628-255=538+71=854-592=437+142=293-156=51+849=二年级 1000 以的加、减法笔算分钟)二年级1000以的加、减法笔算分钟)二年级 1000 以的加、减法二年级 1000 以的加、减法笔算分钟)276+195=145-68=548+452=85+263=293-56=900-405=479-254=400-206=560+380=725-388=292-187=366+207=225+214=521+26=97+535=362-138=450-242=198+157=283+76=349+231=574-390=56+238=679-497=835-209=374+226=485-339=417-223=421-348=239+557=666+286=702-173=575+322=34+678=517-348=405-228=746+163=737-520=800-507=900-461=459-68=352+135=367+595=243+188=474+209=963-204=385+137=602-336=300-185=319+250=326+588=800-695=663+282=208-129=239+571=165+78=715+155=556-379=340-153=726+598=800-695=503+108=702-564=205+89=409+394=分钟)745-679=549+867=528-89=301-84=500-453=501+389=963804=169+450=894-592=437+142=293156=53+807=560...