Thực hiện phép tính :
c) 3 3 . 5 3 – 20 . { 300 – [ 540 – 2 3 ( 7 8 : 7 6 + 7 0 )]}
Thực hiện phép tính :
a) 11070 : {15 . [ 356 – ( 2110 – 2000 )]}
b) 62500 : { 50 2 : [ 112 – ( 52 – 2 3 . 5 )]}
c) 3 3 . 5 3 – 20 . { 300 – [ 540 – 2 3 ( 7 8 : 7 6 + 7 0 )]}
a) 11070 : {15 . [ 356 – ( 2110 – 2000 )]}
= 11070 : [15(356 – 110)] = 11070 : 3690 = 3
b) 62500 : { 50 2 : [ 112 – ( 52 – 2 3 . 5 )]}
= 62500 : { 2500 : [ 112 – ( 52 – 40 )]}
= 62500 : { 2500 : [ 112 – 12 ]}
= 62500 : { 2500 : 100 }
= 62500 : 25
= 2500
c) 3 3 . 5 3 – 20 . { 300 – [ 540 – 2 3 ( 7 8 : 7 6 + 7 0 )]}
= 3 3 . 5 3 – 20 . {300 – [ 540 – 2 3 (72 + 1 )]
= 3 3 . 5 3 – 20 . [ 300 – (540 - 8 . 50)
= 27 . 125 – 20 . [300 – ( 540 - 400 )]
= 3375 – 20 . ( 300 – 140 )
= 3375 – 20 . 160
= 3375 – 3200
= 175
bài 3 : thực hiện phép tính a 2 mũ 5 -19.4 ,b 20-[30-(5-1)mũ 2] , c 187-(24-5.3) mũ 2 ,d 2010 - 2000:[486-2(7 mũ 2-6)] ,e 100:{300:[450-(4.5 mũ 3 - 2.mũ 3.25)]} mong các cậu giúp mik
a: \(=32-76=-44\)
b: \(=20-30+4^2=-10+16=6\)
Câu 1: Thực hiện phép tính (tính nhanh nếu có thể): a)7/3 + 2/5 × 5/6 b)-4/9× 7/15+4/-19 ×8/15 Câu 2: Tìm x, biết: a)x+3/10=7/5 b)300/x =100/20 GIÚP MH VỚI 🙏🥺
Mn giúp mh với đg cần gấp lắm ln🥺🥺
Thực hiện phép tính
33.53-20.{300-[546-23.(78-76+70)]}
626500:{502:[178-4.(35-21:3)]}
\(3^3\cdot5^3-20\cdot\left\{300-\left[546-2^3\cdot\left(7^8-7^6+7^0\right)\right]\right\}\)
\(=3^3\cdot5^3-20\cdot\left\{300-\left[546-2^3\cdot5647153\right]\right\}\)
\(=3^3\cdot5^3-20\cdot\left\{300-\left[546-45177224\right]\right\}\)
\(=3^3\cdot5^3-20\cdot\left\{300--45176678\right\}\)
\(=3^3\cdot5^3-20\cdot45176978\)
\(=3375-903539560\)
\(=-903536185\)
\(626500:\left\{50^2:\left[178-4\cdot\left(35-21:3\right)\right]\right\}\)
\(=626500:\left\{50^2:\left[178-4\cdot\left(35-7\right)\right]\right\}\)
\(=626500:\left\{50^2:\left[178-4\cdot28\right]\right\}\)
\(=626500:\left\{50^2:\left[178-112\right]\right\}\)
\(=626500:\left\{50^2:66\right\}\)
\(=626500:\frac{1250}{33}\)
\(=\frac{82698}{5}\)
CHUC BAN HOC TOT >.<
.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?
thực hiện phép tính(nếu có thể)
a,2/5-3/8+7/6
b,2/3+(5/7+-2/3)
c,5/13+(-5/7)+(-20/41)+8/13+(-21/41)
\(a,\dfrac{2}{5}-\dfrac{3}{8}+\dfrac{7}{6}=\dfrac{16}{40}-\dfrac{15}{40}+\dfrac{7}{6}=\dfrac{1}{40}+\dfrac{7}{6}=\dfrac{3}{120}+\dfrac{140}{120}=\dfrac{143}{120}\)
\(b,\dfrac{2}{3}+\left[\dfrac{5}{7}+\left(-\dfrac{2}{3}\right)\right]=\dfrac{2}{3}+\dfrac{5}{7}+\left(-\dfrac{2}{3}\right)=\left[\dfrac{2}{3}+\left(-\dfrac{2}{3}\right)\right]+\dfrac{5}{7}=0+\dfrac{5}{7}=\dfrac{5}{7}\)
\(c,\dfrac{5}{13}+\left(-\dfrac{5}{7}\right)+\left(-\dfrac{20}{41}\right)+\dfrac{8}{13}+\left(-\dfrac{21}{41}\right)\)
\(=\left(\dfrac{5}{13}+\dfrac{8}{13}\right)-\dfrac{5}{7}-\dfrac{20}{41}-\dfrac{21}{41}=-\dfrac{5}{7}\)
a: =48/120-45/120+140/120
=143/120
b: =2/3-2/3+5/7=5/7
c: =5/13+8/13-5/7-20/41-21/41
=-5/7
Thực hiện phép tính
a)20:2²+5⁹:58
b)84:4+3⁹:3⁷+5
c)3¹¹:3⁹-98:7²
Thực Hiện phép tính :
a) A = -6.(-8+5-4)):3-7.|-2|.3
b)-4872-(375-4872)+300
\(-4872-\left(375-4872\right)+300\)
\(=-4872-375+4872+300\)
\(=-75\)
a) A = -6 . ( -8 + 5 - 4 ) : 3 - 7 . |-2| . 3
A = -6 . ( -3 - 4 ) : 3 - 7 . 2 . 3
A = -6 . ( -7 ) : 3 - 14 . 3
A = 42 : 3 - 42
A = 14 - 42
A = -28
Vậy A = -28
b) -4872 - ( 375 - 4872) + 300
= -4872 - 375 + 4872 + 300
= ( -4872 + 4872 ) - ( 375 - 300 )
= 0 - 75
= -75
a)\(\left(-3\right).8.\left(-2\right).5=\left(-3\right).\left(-2\right).8.5\)
\(=6.40=240\)
b)\(127-18.\left(5+6\right)=127-18.11\)
\(=127-198=-71\)
c)\(125-\left(-75\right)+32-\left(48+32\right)=125+75+32-48-32\)
\(\left(125+75\right)+\left(32-32\right)-48=200-48=152\)
d)\(3.\left(-4\right).2+2.\left(-5\right)-20=-12.2+2.\left(-5\right)-20\)
\(=\left(-12-5\right).2-20=-17.2-20=-140-20=-160\)
Chúc bạn học tốt