120×12﹣14.4÷0.45
6.62﹣0.53﹣2.47
125×32×25
32÷25
①(3618÷18-145)×20
②6÷ - ÷6
③(21+ )× +
④ ×[ ÷( - )]
⑤3.5×98+35×0.2
①6.4×2.5×1.25
②8.5×98%
③÷4+×
④×
①250-250÷25×2
②18÷ ×
③5.2÷0.4÷2.5
④(34- )÷17
⑤4.3×1.75-1.75+ ×6.7
⑥ ×[(72.8-69.6)÷ ]