① 480÷16= ② 4×46×25= ③ 7×99+7= ④ 57×98+57×2= ⑤ 1.2×0.6= ⑥1/3-1/4 ⑦0.85 ÷ 0.5= ⑧3/8 ÷ 6= ⑨9.2-3.8= ⑩1700 ÷ 50 ÷ 2=
