a. 20:2 mu2 +5mu9:5mu8
b. 29-[16+3.(51-49)]
f) -20:2^2+(-5)^9:5^8
g)-100:5^2+-7.(-3)^2
h)-84:4+3^9:(-3)^7+(-5)^0
i)-29-[16+3.(51-49)]
j)-58.75+58.(-50)-58.(-25)
f: \(-20:2^2+\left(-5\right)^9:5^8\)
\(=-20:4-5^9:5^8\)
=-5-5
=-10
g: \(-100:5^2+\left(-7\right)\cdot\left(-3\right)^2\)
\(=-\dfrac{100}{25}-7\cdot9\)
=-4-63
=-67
h: \(-84:4+3^9:\left(-3\right)^7+\left(-5\right)^0\)
\(=-21-3^9:3^7+1\)
\(=-21-3^2+1\)
=-20-9
=-29
i: \(-29-\left[16+3\left(51-49\right)\right]\)
\(=-29-16-3\cdot2\)
=-45-6
=-51
j: \(-58\cdot75+58\cdot\left(-50\right)-58\left(-25\right)\)
\(=58\cdot\left(-75\right)+58\left(-50\right)+58\cdot25\)
\(=58\left(-75-50+25\right)\)
\(=-58\cdot100=-5800\)
29 - [ 16 + 3 .( 51 - 49 ) ]
\(29-\left[16+3.\left(51-49\right)\right]\)
\(=29-\left[16+3.2\right]\)
\(=29-\left[16+6\right]\)
\(=29-22=7\)
\(29-\left[16+3\left(51-49\right)\right]=29-\left(16+6\right)=29-22=7\)
29 – [16 + 3.(51 – 49)]
29-[16+3.( 51-49)]
=29-16-3.2
=7
29 – [16 + 3.(51 – 49)]
`@` `\text {Ans}`
`\downarrow`
`29 - [16 + 3.(51 - 49)]`
`= 29 - (16 + 3.2)`
`= 29 - (16 + 6)`
`= 29 - 22`
`= 7`
29 – [16 + 3.(51 – 49)]
= 29 - [16 + 3. 2]
= 29 - [16 + 6]
= 29 - 22
= 7
a) 513 : 510 – 25.22
b) 20 : 22 + 59 : 58
c) 100 : 52 + 7.32
d) 84 : 4 + 39 : 37 + 50
e) 29 – [16 + 3.(51 – 49)]
f) 5.22 + 98:72
g) 311 : 39 – 147 : 72
h) 295 – (31 – 22.5)2
718 : 716 +22.33
\(a)\) \(5^{13}:5^{10}-25.2^2=5^3-25.4=125-100=25\)
\(b)\) \(20:2^2+5^9:5^8=20:4+5^1=5+5=10\)
\(c)\) \(100:5^2+7.3^2=100:25+7.9=4+36=40\)
\(d)\) \(84:4+3^9:3^7+5^0=84:4+3^2+1=21+9+1=31\)
\(e)\)
\(29-\left[16+3.\left(51-49\right)\right]=29-\left[16+3.2\right]=29-\left[16+6\right]=29-22=7\)
\(f)\) \(5.2^2+98:7^2=5.4+98:49=20+2=22\)
\(g)\) \(3^{11}:3^9-147:7^2=3^2-147:49=9-3=6\)
\(295-\left(31-2^2.5\right)^2=295-\left(31-4.5\right)^2=295-\left(31-20\right)^2=295-11^2=295-121=174\)
\(7^{18}:7^{16}+2^2.3^2=7^2+4.9=49+36=85\)
a: \(5^{13}:5^{10}-25\cdot2^2\)
\(=5^3-25\cdot4\)
=125-100
=25
b: \(20:2^2+5^9:5^8\)
\(=20:4+5\)
=5+5
=10
a) 100 : 52 + 7.32
b) 84 : 4 + 39 : 37 + 50
c) 29 – [16 + 3.(51 – 49)]
d) 5.22 + 98:72
a)100:25+7.9=4+16=20
b)84:4+9+1=31
c)29-(16+3.1)=10
d)5.4+98:49=20+2=22
Bài 1:Thựchiệnphéptính:
a) 3.52 + 15.22 – 26:2 b)53.2 – 100 : 4 + 23.5 c)62 : 9 + 50.2 – 33.3
d)32.5 + 23.10 – 81:3 e)513 : 510 – 25.22g)20 : 22 + 59 : 58
h)100 : 52 + 7.32 h)84 : 4 + 39 : 37 + 50 i)29 – [16 + 3.(51 – 49)]
mk cần gấp
\(a,=75+60-13=122\\ b,=250-25+40=265\\ c,=4+100-9=95\\ d,=45+80-27=98\\ e,=5^3-100=125-100=25\\ g,=5+5=10\)
a)
=\(3.5.5+3.5.2-13=3.5\left(5+2\right)-13=15.7-13=105-13=92\)
b)
\(=5^3.2-25+2^3.5=5.25-5.5+8.5=5\left(25-5+8\right)=5.28=140\)
c)
\(6^2:9+50.2-3^3.3=36:9+100-3^4\)
=\(4+100-81\)=23
a: \(3\cdot5^2+15\cdot2^2-26:2\)
\(=75+60-13\)
=122
b: \(5^3\cdot2-100:4+2^3\cdot5\)
\(=250-25+40\)
=265
c: \(6^2:9+50\cdot2-3^3\cdot3\)
\(=4+100-9\)
=95
a) 29 – [16 + 3.(51 – 49)]
b) 5.22 + 98:72
c) 311 : 39 – 147 : 72
d) 295 – (31 – 22.5)2
718 : 716 +22.33
b: =20+98:49
=20+2
=22
c: =9-147:49
=9-3
=6
29-[16+3.(51-49)]
10^2-60:(5^6:5^4-3.5)
(-123)+/-13/+(-7)
a, 29-[16+3.(51-49)]
=29-[16+3.2]
=29-[16+6]
=29-22
=7
b,10^2-60:(5^6:5^4-3.5)
=100-60:(5^2-15)
=100-60:(25-15)
=100-60:10
=100-6
=94
c,(-123)+/-13/+(-7)
=(-123)+13+(-7)
=-110+(-7)
=-117
k nhé mình nhanh nhất
10^2-[ 60/(5^6/5^5-3.5)]