1÷0.25= 15×60= 72×25%=
1.1-0.01= 12÷ =
24×( )=
÷ = ÷2= ( ﹣ )×42=
289+69= 6.1-2.8= 0.01÷0.1= 3.5×1.6=
- = × = ÷ = 36×25%=
0.125×1.6×80= ( -0.4)×5=