二年级数学加减法口算练习627=2314=2536=3819 4413 3917 2933 4526 1611 5436 4421 5436 2933 4526 2823 5527 3928 737 5337 6960 5425 6546 5726 6918 7419 7497015 4635 8599582 3527 8764239 36+30= 59+40= 20+67= 24+63= 52+36= 37+42= 45+34= 54+33= 49+44= 56-22= 43-13= 88-62= 92-71= 89-5= 67-40= 80-9= 39-21= 46= 29= 78-58= 35-17= 72-27= 43-32= 69+21= 59+30+10= 39+34= 46+17= 91-75= 60-13=63+8+2= 62+14= 96-26= 25+26+4= 24+34=85-44= 75+15+5= 11+42+28= 72-46= 18+24+46=
