直接写出得数.60×30= 16×30= 50×50= 26×20=70×4= 10×21= 80×60= 42×0=
15: ==36÷ = %
0.6== : = ÷ .
12÷ ==0.375= :24.
0.75= %= ÷ = 折.
÷8==0.25= %= : .