0.5÷5%= 0.75× = 2+3%= 3a×4a=
0.57+4.3=
×=
73×101=
-=
2.4÷0.1=
2.6×-×0.6=
0.7﹣ = × = + =
15÷ = ( + )×6= 1.25× ×8=
1÷0.25= +1 = ×24= + =
400×0.02= 10÷ = 6 ×0= 3× ﹣ ×3=