完成时间太棒了真不错50 以内加减混合练习题14-11= 17+21= 16+21= 8+12= 8+12= 25-5= 46+2= 33+5= 36+3= 34-4= 36-17= 37-19= 16+10= 46+1= 7+31= 44-2= 18+19= 47-30= 3+6= 45-3= 41-27= 15+21= 26-4= 35+1= 29-20= 33+13= 38+6= 48-19= 38-36= 10+17= 13+33= 42+7= 28+3= 12+18= 48-36= 48-38= 8+36= 27-6= 27+7= 46-37= 10+11= 36-18= 8-1= 24-19= 19-13= 1+16= 8+41= 45-31= 17+19= 21+2= 5+5= 38+4= 48-5= 48-13= 28-7= 35-3= 28-17= 34-30= 12-5= 11-3= 完成时间太棒了真不错50 以内加减混合练习题25+15= 21+16= 16+30= 10+15= 23+7= 44-40= 19+26= 1+34= 42-41= 10-5= 18+28= 7+15= 20-3= 45+5= 47-16= 9+37= 4+10= 40-32= 14-12= 5-1= 22+24= 38+7= 6+6= 47-32= 49-10= 23-4= 47-22= 40-38= 42+6= 21+20= 7-5= 30-17= 27-26= 30-8= 45-18= 21+7= 45-17= 48-5= 17+33= 17+21= 19+23= 28-24= 6+35= 22+11 40-31= 23-12= 23+4= 30-28= 24+1= 11+35= 38-29= 29+15= 16-12= 1+13= 35-32= 14+28= 28-