①86+176÷4
②192-25×4
③784÷(5+2)
④(120-6)×3
⑤(250+170)÷7
⑥502-107×3
①( ﹣ )×24
②0.36×99+0.36
③20.8﹣(9.6+0.125÷12.5%)
④( ﹣ ÷2)×
⑤2.5×16×12.5
⑥0.5÷[ ﹣( ﹣ )]