妈妈折了45只纸鹤，宝宝折了28只纸鹤，送给妹妹30只后，还剩多少只纸鹤？/j9Q'r5r2u2|+T5X5?)])t
算式：提示,w/V6y5H2c+M,z,m2D:R/L-Z/j9Q'r5r2u2|+T5X5?)])t
答：还剩8g+Y)a1b6A(U.};q*}/_'q4]-l9z([只纸鹤。/j9Q'r5r2u2|+T5X5?)])t