7×0.5+1.2= 0.98+0.13×10= 5.4-2.8+4.6= 13.5-6.2-3.8=
23-0.25×4= 25÷0.5×0.8= (4.9+5.1)×0.7= 4.5-4.5÷1.5=
①10.93×3.5+9.07×3.5
②(77.4-3.096÷0.4)÷0.03
③ 6.4÷0.125÷8
④22.8-(6+9.728÷3.2)
⑤30.1÷[(6.07+2.53)×0.7]
⑥0.75×24÷0.25