20×0=
26÷2=
120×40=
49×102≈
640÷20=
125×8=
860÷86=
279÷41≈
1÷0.25= +1 = ×24= + =
400×0.02= 10÷ = 6 ×0= 3× ﹣ ×3=
①
②
③12.5×0.32×2.5
④5÷+÷5
⑤18×()×14
⑥4.5×26+45×7.4