×(-)÷ ()×27×15
+(+)×8
0.125×0.25×32 0.375×3.4+4.6×
(-+)÷ 6.72-2.3÷0.5×0.8
①0.25×16.2×4
②375+450÷18×25
③35.6- +34.4-
④ × + ÷
⑤[( - )× ]÷
⑥3.5× +5.5×80%+0.8