[11+13+15+.....+19]x[6x8-48]
(6x8-48):(10+11+12+13+14+15)=
(6 x 8 -48):(10+11+12+13+14+15)
=(48-48):(11+12+13+14+15)
=0:(11+12+13+14+15)
=0
(6x8-48)-(10+11+12+13+14+15)=?
tính bằng cách thuận tiện nhất
a) 100+100:4-50:2
b) (6x8-48) x (10+11+12+13+14+15)
Câu A. là 100,Câu B.là 0 bạn nhé @nhi
câu trả lòi là 0
100+100:4-50 (6x8-48):(10+11+12+13+14 10000x2+60000 (70000-3000)x2
100+100:4-50
(6x8-48):(10+11+12+13+14 10000x2+60000 )
(70000-3000)x2
Chia 3 phần à ??
100+100:4-50=75
(6 x 8-48):(10+11+12+13+14)=0
10000x2+60000=80000
(70000-3000)x2=134000
\(100+100:4-50=100+25-50=75\)
\(\left(6\cdot8-48\right)\left(10+11+12+13+14\right)=\left(48-48\right)\left(10+11+12+13+14\right)=0\)
tính bằng cách thuận tiện nhất
a,4/15 x 7/8 + 4/15 x 2/9
b, 13/29 x 23/11 -13/19 x 8/11 - 13/19 x 4/11
a, 13/19 + 1 - 15/19 - 4/19
b, 3/5 +6/11 +7/13 +2/5 +16/11 +19/13
c, 1/3 +1/6 + 1/12 +1/24 +1/48
d, 1/2 +1/6 +1/12 +1/20 +1/30 +1/42
a. (72 - 8 x9 ) : ( 20 + 21 + 22 + 23 + 24 + 25)
b. (500 x 9 - 250 x18 ) x (1 + 2 + 3 + ...+9)
c. (11 + 13 + 15 + ...+ 19) x (6 x 8 - 48)
a) ( 72 - 8x9 ) : ( 20 + 21 + 22 + 23 + 24 + 25 )
= ( 72 - 72 ) : ( 20 + 21 + 22 + 23 + 24 + 25 )
= 0 : ( 20 + 21 + 22 + 23 + 24 + 25 )
= 0
b) ( 500 x 9 - 250 x 18 ) x ( 1 + 2 + 3 + ... + 9 )
= ( 250 x 2 x 9 - 250 x 18 ) x ( 1 + 2 + 3 + ... + 9 )
= ( 250 x 18 - 250 x 18 ) x ( 1 + 2 + 3 + ... + 9 )
= 0 x ( 1 + 2 + 3 + ... + 9 )
= 0
c ) ( 11 + 13 + 15 + ... + 19 ) x ( 6 x 8 - 48 )
= ( 11 + 13 + 15 + ... + 19 ) x ( 48 - 48 )
= ( 11 + 13 + 15 + ... + 19 ) x 0
= 0
a) ( 72 - 8x9 ) : ( 20 + 21 + 22 + 23 + 24 + 25 )
= ( 72 - 72 ) : ( 20 + 21 + 22 + 23 + 24 + 25 )
= 0 : ( 20 + 21 + 22 + 23 + 24 + 25 )
= 0
b) ( 500 x 9 - 250 x 18 ) x ( 1 + 2 + 3 + ... + 9 )
= ( 250 x 2 x 9 - 250 x 18 ) x ( 1 + 2 + 3 + ... + 9 )
= ( 250 x 18 - 250 x 18 ) x ( 1 + 2 + 3 + ... + 9 )
= 0 x ( 1 + 2 + 3 + ... + 9 )
= 0
a. (72 - 8 x9) : (20 + 21 + 22 + 23 + 24 + 25)
b. (500 x 9 - 250 x 18 ) x (1 + 2 + 3 + ...+ 9)
c. (11 + 13 + 15 + ...+ 19) x (6 x 8 - 48)
Ủa bạn chép vndoc hả, mình cũng vậy
Bài 1 a, ( 11 + 13 +.....+ 19 ) x ( 6 x 8 - 48 )
( 11 + 13 + .. + 19 ) x ( 6 x 8 - 48 )
= ( 11 + 13 + .. + 19 ) x ( 48 - 48 )
= ( 11 + 13 + .. + 19 ) x 0
= 0
( 11 + 13 + .....+ 19 ) x ( 6 x 8 - 48 )
= ( 11 + 13 + .....+ 19 ) x ( 48 - 48 )
= ( 11 + 13 + .....+ 19 ) x 0
= 0
( 11 + 13 +.....+ 19 ) x ( 6 x 8 - 48 )
= ( 11 + 13 +.....+ 19 ) x ( 48 - 48 )
= ( 11 + 13 +.....+ 19 ) x 0
= 0
Rất vui vì giúp đc bạn <3