\(=\dfrac{3}{4}+\dfrac{4}{4}=\dfrac{3+4}{4}=\dfrac{7}{4}\)
\(=\dfrac{3}{4}+\dfrac{4}{4}=\dfrac{3+4}{4}=\dfrac{7}{4}\)
đúng ghi Đ sai ghi S
a)1-3/4+1/4=1-3+1/4 b)1-3/4+1/4=4/4-3/4+1/4
=1-1=0[ ] 1/4+1/4=1/2[ ]
Các phân số : 1/4; 3/2; 1/3 được xếp theo thứ tự từ lớn đến bé là :
a.1/3; 3/2; 1/4;
b.3/2; 1/3; 1/4;
c.1/3; 1/4; 3/2;
d.1/4; 1/3; 3/2
bài 1:
1/4 + 2/3 2/7 + 2/3 2/5 + 1/3 2/3 + 1/2 1/3 + 3/5 4/5 + 1/3
1/8 + 3/4 1/36 + 5/12 1/3 + 1/6 + 1/18.
bài 2:
15/16 - 3/16 17/18 - 5/6 3/4 - 4/9 1/2 - 2/5 5/6 - 3/10 3-1/3
4/5 - 1/10 5/2 - 1 5/8 - 2/5.
Bài 2:
a) ( 1/4 :5 x 1/3 x 1/4 ) : ( 2/3 + 1/5 :4 )
b) ( 3/4 :5 + 1/2:3/5 ) x ( 4/5 + 1/3 x2 )
1/2+{1/3+2/3}+{1/4+2/4+3/4}+1/5+2/5+3/5+4/5}
Dãy phân số nào được viết theo thứ tự từ bé đến lớn:
A 1/5; 3/2; 1/4; 1/3
B 1/3; 1/4; 1/5; 3/2
C 3/2 ; 1/3; 1/4; 1/5
D 1/5; 1/4; 1/3; /32
1. Tính
2 - 1/4 - 1/3 =
2* 1/4 * 1/3 =
2 : 1/4 : 1/3 =
2 + 1/4 + 1/3
day phân sô duoc xêp theo thu tu tu be dên lon la : A 3/4 1/6 2/3 4/5 B 1/6 2/ 3/4 5/4 C 2/3 1/6 3/4 5/4 D 5/4 1/6 2/3 3/4
1.(x-3/4)x2/3+1/3=4/3 2.3/4:(x-1)+1/2=2
a) 4/3 + 1/3 + 1/5=......................................................................................................................................................................
b) 4/3 + 1/3 - 1/5=........................................................................................................................................................................
c) 1/2 nhân 1/3 : 1/4=...................................................................................................................................................................
d)1/2 : 1/3 : 1/4=...............................................................................................................................................................................
ai giải giúp mình nhé ^ _ ^