男生人数占全班人数的 ,那么女生人数比男生人数少 .
4× = × = 1.5× = 1- ÷ =
÷3= 12÷ = ÷ = + × =
① x=
②72x=
③ +x=
④14÷x=
⑤ x- x=44
⑥ x+x=
①
②
③
④
⑤
⑥
看图列式