\(\dfrac{3}{1}-\dfrac{5}{6}=\dfrac{18}{6}-\dfrac{5}{6}=\dfrac{13}{6}\)
\(\dfrac{11}{3}-\dfrac{2}{1}=\dfrac{11}{3}-\dfrac{6}{3}=\dfrac{5}{3}\)
tinh bang hai cach
(6/11+5/11) * 3/7
(6/7-4/7) : 2/5
3/5 * 7/9 - 3/5 *2/9
8/15 : 2/11 + 7/15 :2/11
Tính bằng 2 cách.
A, (6/11 +5/11)* 3/7
B, 3/5 * 7/9 + 3/5 * 2/9
C, ( 6/7 - 4/7 ) : 2/5
D, 8/15 : 2/11 + 7/15 : 2/11
Tính bằng 2 cách:
a, ( 6/11 + 5/11 ) x 3/17
b, 3/5 x 7/9 - 3/5 x 2/9
c, ( 6/7 - 4/7 ) : 2/5
d, 8/15 : 2/11 + 7/15 : 2/11
Bài 1:Tính
a,3/2+5/4+5/8
b,4/5-3/8+2/4
c,3+6/8-5/4
d,5/6-1/2+2
e,3/5+6/11+7/13+2/5+16/11+19/13
g,75/100+18/21+29/32+1/4+3/21+13/32
Giusp mình nhé
Bài 1 : Tính bằng hai cách
a) ( 6/11 + 5/11 ) x 3/7 =
b) 3/5 x 7/9 - 3/5 x 2/9 =
c) ( 6/7 - 4/7 ) : 2/5 =
d) 8/15 : 2/11 + 7/15 : 2/11 =
Bài 2 : Tính
a) 2 x 3 x4/3 x 4 x 5 =
b) 2/3 x 3/4 x 4/5 : 1/5 =
c) 1 x 2 x 3 x 4 / 5 x 6 x 7 x8 =
d) 2/5 x 3/4 x 5/6 : 3/4 =
bài 1
4/7+4
3+6/11
3-5/7
21/9-2
15/24+2
63/45-20/25
3/4-2/8
6/7-5/8
37/45-5/9
46/39-11/13
5/12+3/4+1/3
1/2+3/7+11/14
7/10-(1/5+1/4)
15/4-2/3-3/4
viết vào chỗ chấm
a.2/7+(3/7+5/7)= b.(6/11+5/11)+4/11= c.(5/6+7/6)+2/6=
tính nhanh : a) 2/5 x 1/4 + 3/4 x 2/5 b) 6/11 : 2/3 + 5/11 : 2/3
Tính bằng hai cách
a) ( 6 / 11 + 5 / 11 ) x 3 / 7
b) 3 / 5 x 7 / 9 - 3 / 5 x 2 / 9
c) ( 6 / 7 - 4 / 7 ) : 2 / 5
d) 8 / 15 : 2 / 11 + 7 / 15 : 2 / 11
tinh bang cach thuan tien nhat
a(6/11 + 5/11)*3/7
b.3/5 * 7/9 +3/5*2/9
c.(6/7 - 4/7) : 2/5
d.(8/15 : 2/11 + 7/15 : 2/11
