青青有3条红头绳,5条粉头绳,4条黄头绳,青青一共有几条头绳?3Z0A8y4f'r
,K8g)v/v-I7[1g(条)3Z0A8y4f'r
答:青青一共有
算式:提示8v,_4f.V,y4k9Q4?7Y.h条头绳。3Z0A8y4f'r