(136+152)÷32 664÷83×632
①8(x﹣6.2)=41.6
②15.8﹣ +14.2﹣
③0.125×76+12.5%×24
④ x+ x=30
⑤
⑥
①250-250÷25×2
②18÷ ×
③5.2÷0.4÷2.5
④(34- )÷17
⑤4.3×1.75-1.75+ ×6.7
⑥ ×[(72.8-69.6)÷ ]
①15.28﹣3.6﹣3.4
②()×7.2
③
④7.5÷[(6.8﹣4.3)×0.12]