37.8÷1.25÷8
43.68+99×43.68
91× +39÷13
0.53+0.47=
25×40%=
①
②36×()
③
④
⑤3.24×0.76+3.24×0.24
⑥
4.6×0.32= 91.2÷7.6= 78.6÷11=(商用循环小数表示)