整十数加一位数及相应的减法,30 + 4 =,34,4 + 30 =,34,34 - 4 =,30,34 - 30 =,4,你能看图列出哪些算式？,30 + 4 =,34,3个十,4个一,和 合起来是34,34 - 30 =,4,30 + 4 = 34,加数,加数,和,4 + 30 = 34,被减数,减数,差,先摆,再摆,一共,=,50 + 6,56,先摆,拿去,还剩,=,35 5,30,连连看,连连看,根据下面的算式，你能想到其它三个算式吗？ 3+70=73 54-4=50,70+3 = 73,73-3 = 70,73-70 = 3,54-50 = 4,50+4= 54,4+50 = 54,
