0.54÷6=        2.4×5=           64.2÷0.2=         5.6×2÷5.6×2=

5.4－3.8=       0.6×0.1=        1.25×32=          85÷（1－0.9）=

①1.75÷0.25×0.4

②3.6×101－3.6

③7.2÷1.6+1.8

④7.24×0.1＋0.5×72.4＋0.049×724

⑤99.66×6＋66.78×18