120×12﹣14.4÷0.45
6.62﹣0.53﹣2.47
125×32×25
32÷25
( + )× +
( ﹣ + )÷
5× +14÷4﹣19×0.25
①54×98
②(+﹣)×24
③4.86×[1÷(2.1﹣2.09)]
④8﹣