\(a,=\dfrac{1\times3\times5}{3\times5\times9}=\dfrac{1}{9}\\ ----------\\ b,=\dfrac{15}{16}\times\dfrac{8}{3}\times\dfrac{3}{4}=\dfrac{15\times8\times3}{16\times3\times4}=\dfrac{15}{8}\)
\(a,=\dfrac{1\times3\times5}{3\times5\times9}=\dfrac{1}{9}\\ ----------\\ b,=\dfrac{15}{16}\times\dfrac{8}{3}\times\dfrac{3}{4}=\dfrac{15\times8\times3}{16\times3\times4}=\dfrac{15}{8}\)
a. 2+3/4 b.1/3+3/2-7/4 c.1/6+3/8-1/4 d.5/12+3/8x4/9 e.4/5-1/5x7/2 f.16/9-4/15:2/5
a.1/4 +3/8 +5/16=........................
b, 3/5 - 1/3 -1/6=......................
c, 4/7 *5/8 *7/12=..........................
d. 25/28 : 15/24 * 6/7=.....................
a) 2/3 + 1/2 + 1/6 b) 5/12 + 5/6 - 3/4 c) 1/3 x 3/5 x 2/5 d) 15/16 : 3/8 x 3/4
Bài tính đó :3
a)viết các phân số sau theo thứ tự từ bé đến lớn :
2/3 , 3/4 , 5/6 , 1/12.
b)Tính:
a)3/4+2/3+5/12=........................................................
b)7/8-7/16-11/32=.....................................................
c)3/5 nhân 2/7 nhân 5/6=............................................
d) 15/16:3/8 nhân 3/4=................................................
Bài 1: Tính
a, 2/3+1/2+1/6
b, 5/12+5/6-3/4
c, 1/3*3/5*2/5
d, 15/16 : 3/8 *3/4
giúp mình nha đang cần gấp
thuc hien phep tinh
a, 516x2,15
b, 2,1655 : 5
c, 15/4 x 8/3 x 16/25 x 1/5
d, 3/7 : 5/4 x 3/5
1/4 + 3/8 + 5/16 = ?
3/5 - 1/3 - 1/6 = ?
25/28 : 15/14 x 6/7 =?
\(\dfrac{15}{16}\div\dfrac{5}{8}\times\dfrac{3}{4}\)
\(\dfrac{21}{4}\times\dfrac{16}{14}\times\dfrac{1}{2}\times\dfrac{8}{3}\)
a.7/9x3/14:5/8 b.3/5x4/21x25/3 c.15/16:5/8x3/4 d.21/4x16/14x1/2x8/3
lớn đến bé
7/8 ; 7/11 ; 7/10 ; 7/9 ; 7/15 ;
tính
a)1/4 + 3/8 + 5/16 =
b)3/5 - 1/3 - 1/6 =
c)4/7 x 5/8 x 7/12 =
d)25/28 : 15/14 x 6/7 =