3.7×100=
0.3÷100=
350+470=
90﹣23﹣37=
320÷40=
12×5=
28×0÷54=
0.21×100÷10=
3.34×66.6=
3.334×666.6=
3.3334×6666.6=
88.83÷9=
88.884÷9=
88.8885÷9=
88.88886÷9=
88.888887÷9=