Thực hiện phép tính :
( 210 . 18 + 14 . 210 ) : 213
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7 - 2 10 + 7 + 2 10
= 5 - 2 . 2 . 5 + 2 - 5 + 2 . 2 . 5 + 2 = 5 - 2 2 - 5 + 2 2 = 5 - 2 - 5 + 2 = 5 - 2 - 5 + 2 = - 2 2
a, 27.75 + 25.27 – 150
= 2025 + 675 – 150 = 2550
b, 142 – [50 – ( 2 3 .10 – 2 3 .5)]
= 142 – [50 – (80 – 40)] = 132
c, 375:{32 – [4+( 5 . 3 2 – 42]} – 14
= 375:{32 – [4+(45 – 42)]} – 14
= 375:(32 – 7) – 14 = 15 – 14 = 1
d, {210:[16+3.(6+3. 2 2 )]} – 3
= [210:(16+3.18)] – 3
= 210 : 70 – 3 = 3 – 3 = 0
a, 27.75 + 25.27 – 150
= 2025 + 675 – 150 = 2550
b, 142 – [50 – ( 2 3 .10 – 2 3 .5)]
= 142 – [50 – (80 – 40)] = 132
c, 375:{32 – [4+( 5 . 3 2 – 42]} – 14
= 375:{32 – [4+(45 – 42)]} – 14
= 375:(32 – 7) – 14 = 15 – 14 = 1
d, {210:[16+3.(6+3. 2 2 )]} – 3
= [210:(16+3.18)] – 3
= 210 : 70 – 3 = 3 – 3 = 0
a) 210 + [46 + (-210) + (-26)]
= 210 + [ (-164) + (-26) ]
= 210 + (-190)
= 20
b) (-8) - [(5) + 8 ]
=(-8) - 3
= -11
c) 25 . 134 + 25 . (-34)
= 25 . [ 134 + (-34) ]
= 25 . 100
= 2500
a, 210+[46+(-210)+(-26)
=210+46+(-210)+(-26)
=[210+(-210)]+[46+(-26)]
=0+20
=20
b,(-8)-[(-5)+8]
=(-8)-3
=-11
c,25.134+25.(-34)
=25.[134+(-34)]
=25.100
=2500
\(\left\{210:\left[16+3.\left(6+3.2^2\right)\right]\right\}-3\)
\(=\left\{210:\left[16+3.\left(6+3.4\right)\right]\right\}-3\)
\(=\left\{210:\left[16+3.\left(6+12\right)\right]\right\}-3\)
\(=\left\{210:\left[16+3.18\right]\right\}-3\)
\(=\left\{210:\left[16+54\right]\right\}-3\)
\(=\left\{210:70\right\}-3\)
\(=3-3\)
\(=0\)
(-8)-[(-5)+8]
=(-8)-3
=-11
25.134+25.(-34)
=25.[134+(-34)]
=25.100
=2500
210+[46+(-210)+(-26)]
=210+46+(-210)+(-26)
=[210+(-210)]+[46+(-26)]
=0+20
=20
x+10=-14
x =(-14)-10
x =-24
2x-(-17)=15
2x =15+(-17)
2x =-2
x =(-2):2
x =-1
Bài 1: Thực hiện các phép tính sau:
\(a)\)Chưa rỏ đề
\(b)\)\(5025\div5-25\div5\)
\(=\)\(1005-5\)
\(=\)\(1000\)
\(c)\)\(218-180\div2\div9\)
\(=\)\(218-10\)
\(=\)\(208\)
\(d)\)\(\left(328-8\right)\div32\)
\(=\)\(320\div32\)
\(=\)\(10\)
Bài 1:
a) ( Tôi không nhìn rõ đầu bài )
b) 5025 : 5 - 25 : 5
= ( 5025 - 25 ) : 5
= 5000 : 5
= 1000
c) 218 - 180 : 2 : 9
= 218 - 180 : ( 2 . 9 )
= 218 - 180 : 18
= 218 - 10
= 208
d) ( 328 - 8 ) : 32
= 320 : 32
= 10
a: \(25\cdot37+63\cdot25\)
\(=25\left(37+63\right)\)
\(=25\cdot100=2500\)
b: \(\left(-210\right)+325+\left(-90\right)+175\)
\(=\left(-210-90\right)+\left(325+175\right)\)
=-300+500
=200
a) 25.37 + 63.25
=25x(37+63)
=25x100
=2500
b) (-210) + 325 + (-90) + 175
=(-210-90)+(325+175)
=-300+500
=200
\(=\left[2^{10}\left(18+14\right)\right]:2^{13}\)
\(=\left[2^{10}.32\right]:2^{13}\)
\(=\left[2^{10}.2^5\right]:2^{13}\)
\(=2^{15}:2^{13}\)
\(=2^2\)
\(=4\)
TL :
\(\left(2^{10}.18+14.2^{10}\right):2^{13}\)
\(\left(1024.18-14.1024\right):8192\)
\(\left(18432-14336\right):8192\)
\(4096:8192\)
\(=0,5\)