1、1二年级两位数笔算72-46+38= 65-38+26= 79+16-56= 56+44-26= 55-36+27= 4+27-16=84-27+16= 68+23-29=69+（54-36）= 74-26+32= 261-38+26= 66-(42-25)= 69+19-39= 16+77-26= 73-36+27= 82-27+16= 30+(53-29)= 70-23-9= 93-(39-23)= 71-（43-24）= 391-46+38= 65-39+26= 47+46-56= 56+34-26=56-37+29= 94-29+96= 30-(43-29)= 92-（43-18）91
2、-23+24= 33-(31-23)= 496-47+32= 66-39+26= 47+35-56= 56-29+46= 36+59-26= 43-36+29= 100-（ 23+29）= 23+29+39= 90-(71-23)= 91-（95-29）=555-46+22= 65-28+26= 58+18-58= 56+54-26= 58-26+25= 29+22+49=84-25+16= 47+25-16= 68-(81-22)= 48+（42-24）= 655-56+22= 16+55-26=61-28+38= 58+18-29= 43-26+25= 82-25+16= 20+(52-2
3、8)= 51-（43-24）=51-28-14= 82-(51-22)= 782-46+27= 65-28+26= 18+77-56= 84-28+86=56+34-26= 56-29+28= 20-(42-28)= 81-23+24= 72-(40-22)= 86-（42-24）=881-46+28= 61-28+29= 81+19-86= 86-28-29= 88-26+28= 26+28+49= 85-28+46= 91-(26+28)= 82-(28-22)= 49+（87-28）= 963-38+26= 79+19-36= 36+74-26= 71-46+38=63-36+27= 84-27+16= 4+27-16= 59+（41-24）59+23-17= 62-(41-23)= 1092-76+32= 61-38+28= 79+19-19= 82-27+16= 16+77-26= 18-36+27= 30+(23-29)= 73-23-4= 93-(39-23)= 63-39+26=
