被除数除以除数,商是5,余数是3,又知被除数、除数、商、余数的和是1019,那么除数是 .
= :24=24: == %= (填小数)
1: ==25÷ = %=二成.
=40: = ÷40= %= (填小数)
=12: =1.2= ÷20= %
= (填小数)= 折.