玲玲用去的钱,明明用去的钱,都买了同二本书,玲玲带的钱比较多. .(判断对错)
0.3==12÷ = :30= %
÷40=20: =0.8= : .
3÷ == :12=六成= %
0.25= ÷8== : .
40: =8:10= /5= (填小数)