小刚送给弟弟4本练习本，还比弟弟多2个练习本，原来弟弟比小刚少多少练习本？3W4M/r'X*T1?'p6k1O:v/N
算式：提示*i;R)n;k.H3W4M/r'X*T1?'p6k1O:v/N
答：原来弟弟比小刚少5I9N*I5]练习本。3W4M/r'X*T1?'p6k1O:v/N