5.8+4.2×0.4 125.4-99+73.6 12.5×0.25×32
①0.175÷(0.25×4)
②4.2+5.8÷0.16
③(4.32-0.64)÷0.23
④2.1÷3.5÷0.2
①8(x﹣6.2)=41.6
②15.8﹣ +14.2﹣
③0.125×76+12.5%×24
④ x+ x=30
⑤
⑥
①772-317+128-283
②2.4÷( -20%)
③1-
④5.125× +2.875÷4