\(\dfrac{4}{5}+\dfrac{3}{6}:\dfrac{2}{5}\)
\(=\dfrac{4}{5}+\left(\dfrac{3}{6}:\dfrac{2}{5}\right)\)
\(=\dfrac{4}{5}+\left(\dfrac{3}{6}\times\dfrac{5}{2}\right)\)
\(=\dfrac{4}{5}+\dfrac{5}{4}\)
\(=\dfrac{16}{20}+\dfrac{25}{20}=\dfrac{41}{20}\)
4 5. 4. 6.
--- + --- --- + ---
15 6. 5. 7
3. 4. 2. 5
--- + --- --- + ---
5. 20. 5. 12
4 5. 4. 6.
--- + --- --- + ---
15 6. 5. 7
3. 4. 2. 5
--- + --- --- + ---
5. 20. 5. 12
4 5. 4. 6.
--- + --- --- + ---
15 6. 5. 7
3. 4. 2. 5
--- + --- --- + ---
5. 20. 5. 12
4 5. 4. 6.
--- + --- --- + ---
15 6. 5. 7
3. 4. 2. 5
--- + --- --- + ---
5. 20. 5. 12
4 5. 4. 6.
--- + --- --- + ---
15 6. 5. 7
3. 4. 2. 5
--- + --- --- + ---
5. 20. 5. 12
4 5. 4. 6.
--- + --- --- + ---
15 6. 5. 7
3. 4. 2. 5
--- + --- --- + ---
5. 20. 5. 12
4 5. 4. 6.
--- + --- --- + ---
15 6. 5. 7
3. 4. 2. 5
--- + --- --- + ---
5. 20. 5. 12
2/5+2/3+3/4
2/6+3/12
5/6+1/3
1/3+5/12+5/6
5/8+4/7
1/5+5/35
5/8+3/4
1/6+1/3+1/12
1/6+5/24+2/3
7/3+8/7
2/5+1/6
1/7+1/4+6/7+3/4
giúp với
và ai giải được gọi cụ
Tìm x biết :
x + 4/5 = 4/5 + ( 3/7 + 3/5 ) 5/7 + x/35 = 4/5
x < 3/4 + 2 2/3 + 1 < x < 5/6 + 4
x< 5/6 - 3/4 2/3 < x < 2 - 5/6
Bài 2. a, Các phân số được sắp xếp theo thứ tự từ bé đế lớn là:
A, 2/3; 5/6; 4/2 B, 5/6; 4/2; 2/3 C, 4/2; 5/6; 2/3 D, 2/3; 4/2; 5/6.
b, Các phân số được sắp xếp theo thứ tự từ lớn đến bé là:
A, 2/3; 5/6; 4/2 B, 5/6; 4/2; 2/3 C, 4/2; 5/6; 2/3 D, 2/3; 4/2; 5/6.
a, 4/5 - 1/3. 5/3-3/2
b,7/6-2/3 5/4-3/8
c, 5/6-5/8. 7/4-5/6
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.
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
Tính :
a ) 2/5 + 4/5 : 5/6 =
b ) 7/3 - 2/3 x 4/5 =
c ) 6/5 : 10 x 5/2 =
d ) 4 : 8/9 + 3/4 =
Tính bằng hai cách :
( 5/4 + 2/5 ) : 5/6 =
3/4 x 2/5 - 3/4 x 2/7 =
2/3 : ( 5/6 x9/10 ) =
dãy phân số đc sắp xếp theo thứ tự từ lớn đến bé là :
a :2 / 3 ; 5 / 6 ; 4 / 2
b : 5 / 6 ; 2 / 3 ; 4 / 2
c : 4 / 2 ; 5 / 6 ; 2 / 3
d : 4 / 2 ; 2 / 3 ; 5 / 6
