45kg比少 。
× ÷ ÷ × ÷1 ×1
0.36× = ÷15= 18× = + = × × =
÷ = × = 9÷8= 10÷ = - =
① × + ÷ 6
②12× ÷
③ ÷(3- - )
④ + ×4
⑤( + )× 8+
( )×( )=( )