34+10=33-10= 42-13= 32-23= 32-24= 34+12= 24+13= 14+18= 24+15Р27+14= 18+13= 37-16=Р43-26= 28-19= 31-17= 33+9=Р27-19= 43-26= 44-15 = 35-6= Р35-17= 30-14 = 34+6 = 36-29=Р42-18= 37-18= 38-21= 47-28= Р28+6= 34-10 = 28+18= 34-19= Р50以内口算练习Р 月日时分至时分分数__Р17+13 = 45-18= 26+30= 25+18=34-18= 45-17= 35+6= 42-18= Р38-19= 49-18= 37-29= 34+12= 22-19= 36-18= 45-27= Р19+16= 18+18= 27+16= 26+18= 25+8=Р46-19= 21-8= 33-17= 45-36= 32-15=Р19+18= 25+18= 17+14= 36+9= 15+19=Р43-19= 33-18= 40-27= 32-16= 34-15= Р50以内口算练习Р 月日时分至时分分数__Р19+13= 19+18= 17+18= 16+17= 24+19=Р31-19= 42-18= 46-37= 43-26= 45-25=Р24-19= 25-8= 47-13= 32-30= 41-40=Р31-23= 42-34= 33-14= 31-12= 44-30=