比较每组算式结果的大小.(46+98)+54 98+(46+54)196+169+31 (169+31)+196189+(111+x) (189+111)+x.
÷4=25%= : =8÷ = 折.
0.75= : = :25= 折= %= (成数)
10: ==0.625=5÷ = %
12: = ÷25== (小数)= %
:8=8÷ == %= 小数.