二年级两位数笔算72-46+38=65-38+26=79+16-56=55-36+27=84-27+16=69+(54-36)=56+44-26=4+27-16=68+23-29=74-26+32=61-38+26=66-(42-25)=69+19-39=73-36+27=30+(53-29)=93-(39-23)=16+77-26=82-27+16=70-23-9=71-(43-24)=91-46+38=65-39+26=47+46-56=56+34-26=56-37+29=30-(43-29)=91-23+24=94-29+96=92-(43-18)33-(31-23)=96-47+32=66-39+26=47+35-56=36+59-26=100-(23+29)=90-(71-23)=56-29+46=43-36+29=23+29+39=91-(95-29)=55-46+22=65-28+26=58+18-58=58-26+25=84-25+16=68-(81-22)=56+54-26=29+22+49=47+25-16=48+(42-24)=55-56+22=16+55-26=61-28+38=43-26+25=20+(52-28)=51-28-14=58+18-29=82-25+16=51-(43-24)=82-(51-22)=82-46+27=65-28+26=18+77-56=56+34-26=20-(42-28)=72-(40-22)=84-28+86=56-29+28=81-23+24=86-(42-24)=81-46+28=61-28+29=81+19-86=86-28-29=88-26+28=85-28+46=82-(28-22)=26+28+49=91-(26+28)=49+(87-28)=63-38+26=79+19-36=36+74-26=63-