tinh bang cach thuan tien nhat 47 / 30 : 5/7 - 17/30 x 5/7
( 5 + 10 + 15 + 20 + 25 + 30 + 35 ) x ( 42 - 6 x 7 )
tinh bang cach thuan tien nhat
( 5 + 10 + 15 + 20 + 25 + 30 + 35 ) x ( 42 - 6 x 7 )
= ( 5 + 10 + 15 + 20 + 25 + 30 + 35 ) x ( 42 - 42 )
= ( 5 + 10 + 15 + 20 + 25 + 30 + 35 ) x 0
= 0
Tinh bang cach thuan tien nhat
4/7-2/5+17/7-3/5
giup minh voi minh dang can gap
= 17/7 + 4/7 - 2/5 + 3/5
= 21/7 - 5/5
= 3 - 1
= 2
tinh bang cach thuan tien nhat
59/18 + 75/14 + 46/9 + 5/2 + 47/18 + 15/7
Lay (59/18 + 46/9) + (75/14 + 15/7) + (5/2 + 47/18)
De et a
CAU EASY NAY
TINH BANG CACH THUAN TIEN NHAT
2/3 * 10/21 *3/2
22/5 * 12 * 5/12
7/2 * 28/81 * 2/7
5/17 * 21/4 * 47/15 * 0
2/3 * 10/21 * 3/2 = (2/3 * 3/2) * 10/21 = 1 * 10/21 = 10/21
22/5 * 12 * 5/12 = 22/5 * (12 * 5/12) = 22/5 * 5 =22
7/2 * 28/81 * 2/7= (7/2 * 2/7) * 28/81 = 1 * 28/81 =28/81
5/17 * 21/4 * 47/15 * 0 = 0
~Study well~
#Seok_Jin#
\(\frac{2}{3}\times\frac{10}{21}\times\frac{3}{2}\)
\(=\left(\frac{2}{3}\times\frac{3}{2}\right)\times\frac{10}{21}\)
\(=\left(\frac{1}{1}\times\frac{1}{1}\right)\times\frac{10}{21}\)
\(=1\times\frac{10}{21}\)
\(=\frac{10}{21}\)
tinh bang cach thuan tien nhat : 3/4 x 4/5 + 5/6 x 6/7 x 7/8
tinh bang cach thuan tien
p=3/2-5/6+7/12-9/20+11/30-13/42+15/56-17/72
ai giai tui tich
bn ơi hình như sai đề rồi , số cuối cùng là 17/72
tinh bang cach thuan tien nhat: (7,5x18,3+26,4x18,3)x(47x11-4700x0,1-47)
= (( 7,5 + 26,4 ) x 18,3 ) x ( 4,7 x 11 - 47 x 10 - 47 )
= ( 33,9 x 18,3 ) x ( 4,7 x ( 11 - 10 - 1)
= 620,37 x 0
= 0
( 7,5 x 18,3 + 26,4 x 18,3 ) x ( 47 x 11 -4700 x 0,1 - 47)
= (( 7,5 + 26,4 ) x 18,3 ) x ( 47 x 11 - 47 x 10 - 47)
= ( 33,9 x 18,3) x (( 11 - 10 - 1 ) x 47 )
= 620,37 x ( 0 x 47)
= 620,37 x 0
= 0
Chúc bạn học tốt !
Tinh bang cach thuan tien nhat
3/2 + 4/9 + 4/7 + 5/9
Tinh bang cach thuan tien nhat:
a/ 7,8 x 34,5 + 15,5 x 7,8
b/ 3/7 x 11/5 + 4/7 x 11/5
a/ = 7,8 x ( 34,5 + 15,5 ) = ..... tự tính
b/ 11/5 x (3/7 +4/7 )= .......tự tính
mk nhé
a, 7,8 x 34,5 +15,5 x 7,8 = 7,8 x ( 34,5 + 15,5) =7,8 x 50 =390
b, 3/7 x 11/5 +4/7 x 11/5 = 11/5 x ( 3/7 +4/7) = 11/5 x1=11/5
=.= hok tốt!!
7,8 . (34,5 + 15,5 )
= 7,8 .50.0
=39,000