直接写得数．
9.09+1.1=        10÷0.1=      3﹣1.45=     5﹣1.4﹣1.6=     1÷0.25×4=
1÷（﹣）=    ××=     4﹣﹣=     ﹣÷4=       5÷﹣÷5=