1、两位数加一位数、整十数25+2=25+20=62+4=9+5=17+40=34+5=7+6=14665739132745 25 +2=207527 25 +20=5204540我拔了我拔了5个萝卜个萝卜我拔了我拔了28个萝卜个萝卜一共拔了多少个萝卜？一共拔了多少个萝卜？我拔了我拔了5个萝卜个萝卜我拔了我拔了28个萝卜个萝卜一共拔了多少个萝卜？一共拔了多少个萝卜？先算先算8+5=13再算再算20+13=33先算先算28+2=30再算再算30+3=3327+4=36+8=先圈一圈，再计算先圈一圈，再计算6157 405382 71489489535535547547467863863 748 46
2、7467863 7482456188188495495495376643376643643643643643643643664 77+8=157+8=1517+8=257+8=17+8=251527+8=357+8=17+8=251527+8=3537+8=457+8=17+8=251527+8=3537+8=4547+8=557+8=17+8=251527+8=3537+8=4547+8=5557+8=657+8=17+8=251527+8=3537+8=4547+8=5557+8=6567+8=757+8=17+8=251527+8=3537+8=4547+8=5557+8=6567+8=7577+8=857+8=17+8=251527+8=3537+8=4547+8=5557+8=6567+8=7577+8=8587+8=957+8=17+8=251527+8=3537+8=4547+8=5557+8=6567+8=7577+8=8587+8=95 谢谢聆听谢谢聆听谢 谢
