整十数加一位数及相应的减法,30 + 4 = 34,34-30=4,差,加数,和,被减数,减数,加数,4+30= 34-4=,1、计算 80+5= 2+80= 3+50= 62-2= 56-50= 20+6= 96-90= 28-8=,85,82,53,60,6,26,6,20,5,45,45,5,40,5,40,45,45,40,5,20,8,28,20,8,20,8,28,28,28,20,8,63 60 63 3,59 9 59 50,根据下面的算式，你能想到其它三个算式吗？3+70 54-4,39,47,58,2,60,8,20,4,24,+,38,30,8,-,
