问题
解答题
笔算下面各题,其中带*的要验算.
*768+104=
*508-239=
700-465=
456+268=
答案
*768+104=872;
*508-239=269;
700-465=235;
456+268=724;
笔算下面各题,其中带*的要验算.
*768+104=
*508-239=
700-465=
456+268=
*768+104=872;
*508-239=269;
700-465=235;
456+268=724;