问题
选择题
求7m比4m多百分之几,正确列式是( )
A.(7-4)÷7
B.(7-4)÷4
C.1-4÷7
D.7÷4-1
答案
(7m-4m)÷4m
=(7-4)÷4(与选项B相同)
=3÷4
=75%
答:7m比4m多75%.
故选:B.
求7m比4m多百分之几,正确列式是( )
A.(7-4)÷7
B.(7-4)÷4
C.1-4÷7
D.7÷4-1
(7m-4m)÷4m
=(7-4)÷4(与选项B相同)
=3÷4
=75%
答:7m比4m多75%.
故选:B.