①25×4.2×4
②4.5÷0.125÷8
③5.6÷(5.6×0.25)
④9.6-9.6×0.5
⑤1.23×8.5+0.77×8.5
⑥0.78+0.22÷5
⑦0.75×101
⑧(2.1+6.9÷0.15)÷0.01