50.21×1.250.21 8.346÷2.148.346 9.8×5.960
a+9=b+ 4a+=4b
①2.05÷0.82+33.6
②4.92÷4.1÷0.3
③2.8×4+7.2÷0.25
④3.8÷2.5÷4
⑤96.72÷2.4×1.5
⑥(4.8+1.28)÷0.8