①26.8÷0.4÷2
②4.8÷0.6+3.5÷7
③84.4÷0.4-90.8
④7.2×2-18.6÷6
⑤4.2÷0.75÷0.5
⑥1.8×0.3÷1.2
24.6÷12=
8÷0.17≈(保留两位小数)
0.18÷2.5=
5.43×8.6=
8.74÷0.19=
6.64÷3.3=(商用循环小数表示)
1.5×105 0.8×0.25×0.4×12.5 8.2÷0.25÷4