Các câu hỏi tương tự
a ( 3/4 + 1/2 ) x 5/7 =
Tính bằng hai cách:
Cách 1 :
Cách 2 :
b) 5/7 x 13/21 + 2/7 x 13/ 21=
Tính bằng hai cách :
Cách 1 :
Cách 2 :
c) Tính 7/5 + 4/3 + 7/5 + 4/3 bằng hai cách :
Cách 1 : 7/5 + 4/3 + 7/5 + 4/3 = 7/5 x 2 + 4/3 x 2 =
Cách 2 : 7/5 + 4/3 + 7/5 + 4/3 = ( 7/5 + 4/3) x 2 =
Tìm X:
a).X:1/2=3/4
b).X-1/2=4/5
c).X+2/3=7/5
d).X x 5/4=2/7
e).7/3-x=4/7
f).5/9:x=4/13
g).1/2+x=3/4
h).1/2-x=3/4
i).2/3x X =7/5
k).X:5/4=2/7
l).7/3-x=4/7x14/8
2NG ĐẦU ĐÙNG THÌ MK SẼ TICK NKA
4/ 5 x 15/11 x 2/9
4/7 x 2/5 + 4/7 x 3/5
(5/7 + 7/8) x 2
2/14 + 3/7 - 3/14 x 2
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 =
a)3/2 x 4/7 8/21 : 2/3 8/21 : 4/7 4/7 x 2/3
b)3/11 x 2 6/11 : 3/11 6/11 : 2 2 x 3/11
c)4 x 2/7 8/7 : 2/7 8/7 : 4 2/7 x 4
a (1/2 + 3/4 ) x 4
b (5/7 - 1/4 ) x 7
c 1/2 x 3/4 +1/2 x 1/4
d 11/3 x 26/7 - 26/7 x 8/3
Giải hộ giúp mình 4 phần này huhu
tính nhanh :
a, 2/3 x 4/7 + 1/3 x 4/7
b, 5/8 x 3/7 x 7/3
c, (4/5 + 2 ) x 5/4
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
tìm X biết :
a.2/3 : 5/7 : x/9 = 2/7 : 3/5 :10/9
b.3/5 : 7/x : 3/4 = 12/105
c.x : 1/2 = 2/3 x 4/5 x 3/4 x 15/8
4/7 : 3/8 + 4/7 x 11/3 +4/7 x 2/3