4.2÷6= 1.5﹣0.3= 1.3×6= 0.2÷0.4=
3.05+0.95= 0.75÷0.25= 0.6×55= 10÷0.1=
①4.2÷4.8+0.12×3.5
②0.75×3.5﹣0.75×2.5
③6.5×(3.64÷2.6)
④63÷0.4÷0.25
⑤7.8÷(3.6﹣1.2)
⑥5.6÷0.8﹣3÷1.5