①70-29.6-10.4
②283×5+17×5
③73+3.4+27+5.6
④10-2.75-3.25
⑤85×99
⑥25×64×125
5.4÷0.09= 7.75+3.86-7.75+1.14= 2.5×0.99×0.4=
26.2+38= 40×0.1÷0.001= 56.27- 3.73-46.27=