Tính
a) 568 - { 5 [ 143 - ( 4 - 1 ) 2 ] + 10 } : 10
b) 102 - [ 60 : ( 56 : 54 - 3 x 5 ) ]
.Thực hiện phép tính
a) 47 – [(45.24 – 5 2 .12):14]
b) 50 – [(20 – 2 3 ) : 2 + 34]
c) 102 – [60 : (56 : 54 – 3.5)]
d) 50 – [(50 – 2 3 .5):2 + 3]
e) 10 – [(82 – 48).5 + (23 .10 + 8)] : 28
f) 8697 – [37 : 35 + 2(13 – 3)]
g) 2011 + 5[300 – (17 – 7)2 ]
h) 695 – [200 + (11 – 1)2 ]
k) 2345 – 1000 : [19 – 2(21 – 18)2 ]
l) 128 – [68 + 8(37 – 35)2 ] : 4
m) 568 – {5[143 – (4 – 1)2 ] + 10} : 10
n) 107 – {38 + [7.32 – 24 : 6+(9 – 7)3 ]}:15
o) 307 – [(180 – 160) : 22 + 9] : 2
p) 205 – [1200 – (42 – 2.3)3 ] : 40
q) 177 :[2.(42 – 9) + 32 (15 – 10)]
r) [(25 – 2 2 .3) + (32 .4 + 16)]: 5
i) 129 – 5[29 – (6 – 1)2 ]
j) 2010 – 2000 : [486 – 2(72 – 6)]
s) 125(28 + 72) – 25(32 .4 + 64)
t) 500 – {5[409 – (23 .3 – 21)2 ] + 103 } : 15
Sao bạn bỏ một khoảng trống giữa các số 5 2 với 2 3v?
568 - {5.[143 - ( 4 - 1 ) 2 + 10 ]} :10
\(568-\left\{5.\left[143-\left(4-1\right)^2+10\right]\right\}:10\)
\(=568-\left\{5.\left[143-3^2+10\right]\right\}:10\)
\(=568-\left\{5.\left[143-9+10\right]\right\}:10\)
\(=568-\left\{5.144\right\}:10=568-720:10=568-72=496\)
Thực hiện phép tính
a)-3/5 + 1/4 + -3/10
b)1/5 + -9/10 + -7/25
c)31/23 - ( 7/32 + 8/23 )
a: =-12/20+5/20-6/20
=-13/20
b: =10/50-45/50-14/50
=-49/50
c: =31/23-7/32-8/23=1-7/32=25/32
`a)-3/5 + 1/4 + -3/10= (-12)/20 + 5/20 + (-6)/20 = -13/20`
`b)1/5 + -9/10 + (-7/25)= 10/50 + (-45)/50 + (-14)/50 = (-49)/50`
`c)31/23 - ( 7/32 + 8/23 )= 31/23 - 417/736 =992/736 - 417/736 = 575/736=25/32 `
568-{5[143-(4-1)2]+10}:10
\(568-\left\{5.\left[143-\left(4-1\right)^2\right]+10\right\}:10\)
\(=568-\left[5.\left(143-3^2\right)+10\right]:10\)
\(=568-\left[5.\left(143-9\right)+10\right]:10\)
\(=568-\left(5.134+10\right):10\)
\(=568-68\)
\(=500\)
568 - { 5 [ 143 - ( 4 - 1 )2 ] + 10 } : 10
=568 - { 5 . ( 143 - 32 ) + 10 } :10
=568 - { 5 . ( 143 - 9 ) + 10 ) : 10
=568 - ( 5 . 134 + 10 ) : 10
=568 - 68
=500
568 - { 5 [ 143 - ( 4 - 1 )2 ] + 10 } : 10
= 568 - { 5 [ 143 - 32 ] + 10 } : 10
= 568 - { 5 [ 143 - 9 ] + 10 } :10
= 568 - { 5 . 134 + 10 } : 10
= 568 - { 670 + 10 } : 10
= 568 - 680 : 10
= 568 - 68
= 500
=))
568 - { 5 [ 143-(4-1)]2 +10} :10
568 - { 5 [ 143-(4-1)]2 +10} :10
= 568 - (5 * 140^2 +10) :10
= 568 - 9801
= 9233
=568 - { 5 [143-3]2+10}:10=568 - 5.1402:10-10:10=568-5.142.102:10-1=567-5.142.10=567-9800=-9233
568-{5.[143-(4-1)^2}:10
giúp vs mn ơi gấp lắm
568-(5.(143-3^2)):10
568-(5.134):10
568-670:10
568-67
501
568 -{ 5[143-( 4-1)2]+10}:10
Giải hộ mình với
568 - { 5.[ 143 - ( 4-1)^2]+10} : 10
= 568 - { 5.[ 143 - ( 4^2-1^2]+10}:10
= 568 - { 5.[ 143 - 15 ] + 10 } : 10
= 568 - { 5. 128 + 10 } : 10
= 568 - 650 : 10
= 568 - 65
= 503
1,Tính nhanh
a, 568 + 568 x 135 - 568 x 36
b, 17 x 49 + 49 x 37 + 54 x 26 + 54 x 25
c, 14 x 35 x 5 + 10 x 25 x 7 + 20 x 70
a, 568 + 568 x 135 - 568 x 36
= 568 x ( 1 + 135 - 36)
= 568 x 100
56 800
b, 17 x 49 + 49 x 37 + 54 x 26 + 54 x 25
= 49 x ( 17 + 37) + 54 x ( 26 + 25 )
= 49 x 54 + 54 x 51
= 54 x ( 49 + 51)
= 54 x 100
= 5 400
c, 14 x 35 x 5 + 10 x 25 x 7 + 20 x 70
= ( 2 x 35) x ( 7 x 5) + ( 10 x 7) x 25 + 20 x 70
= 70 x 35 + 70 x 25 + 20 x 70
= 70 x ( 35 + 25 + 20)
= 70 x 80
= 5 600
a) 568 + 568 x 135 - 568 x 36
= 568 x ( 1+1+135-1-36 )
=568 x 100
=5680
b) 17 x 49 + 49 x 37 + 54 x 26 + 54 x 25
= 49 x ( 17 + 37 ) + 54 x ( 26 + 25 )
= 49 x 54 + 54 x 51
= 54 x ( 49 + 51 )
= 54 x 100
= 5400
c) 14 x 35 x 5 + 10 x 25 x 7 + 20 x 70
= 70 x 35 + 10 x 25 x 7+ 20 x 70
= 70 x 35 + 250 x 7 + 20 x 70
= 70 x 35 + 70 x 25 + 20 x 70
= 70 x (35+25+20)
= 70 x 80
= 5600
a) 47 – [(45.24 – 52.12):14] e) 10 – [(82 – 48).5 + (23.1 + 8) -12] : 28
b) 2010 – 2000 : [486 – 2(72 – 6)] g) 128 – [68 + 8(37 – 35)2] : 4
c) 568 – {5[143 – (4 – 1)2] + 10} : 10
d) 307 – [(180 – 160) : 22 + 9] : 2 h) 205 – [1200 – (42 – 2.3)3] : 40
giúp
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