三年级加减混合运算姓名_ 班级_1238+(576-357)=6998+(567-446)=2981-(657+185)=7967-(387+528)=3841+(569-459)=8258+369-147=4788+466-822=9456+854-689=5186+(765-358)=10794-89+128=三年级加减混合运算姓名_ 班级_1746-568+387=6407+(271-161)=2987-(789-487)=7875-(125+165)=3358+697-542=8947-(104+137)=4642+(857-495)=9607-(94+119)=5611-386-145=10800-(135+249)=