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356=3.100+5.10+6.1=3.10^2+5.10^1+6.10^0
3243=3.1000+2.100+4.10+3.1=3.10^3+2.10^2+4.10^1+3.10^0
abbc=a.1000+b.100+b.10+c.1=a.10^3+b.10^2+b.10^1+c.10^0
![](https://rs.olm.vn/images/avt/0.png?1311)
1) 43:22
= 26:22
= 24
= 16
2) 356 = 3.102+5.101+6.100
3243 = 3.103+2.102+4.101+3.100
![](https://rs.olm.vn/images/avt/0.png?1311)
356=3.10^2+5.10^1+6.10^0
3243=3.10^3+2.10^2+4.10^1+3.10^0
abbc tương tự
356=3.100+5.10+6.1=3.10^2+5.10^1+6.10^0
3243=3.1000+2.100+4.10+3.1=3.10^3+2.10^2+4.10^1+3.10^0
abbc=a.1000+b.100+b.10+c.1=a.10^3+b.10^2+b.10^1+c.10^0
![](https://rs.olm.vn/images/avt/0.png?1311)
\(2013=2.1000+10+3=2.10^3+1.10^1+3.10^0\)
\(20112013=2.10000000+100000+10000+2.1000+10+3\)
\(=2.10^7+10^5+10^4+2.10^3+10^1+3.10^0\)
2013 = 2 x 1000 + 10 + 3 = 2 x 10^3 + 1 . 10^1 + 3 . 10^0
20112013 = 2 x 10000000 + 100000 + 2 x 1000 + 10 + 3 = 2 x 10^7 + 10^5 + 10^4 + 2 x 10^3 + 10^1 + 3 x 10^0
ok nhé với lại 10^2 là 10 mũ 2 nhé =>
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2. a) 118 : 113 = 115 c) 43 : 42 = 41
b) 1711 : 179 = 172 d) a5 : a = a4
3. a) 36 : 34 = C1 : 3 . 3 . 3 . 3 . 3 . 3 : 3 . 3 . 3 . 3
= 9
C2 : 36 : 34
= 36-4
= 32
b) 57 : 55 = C1 : 5 . 5 . 5 . 5 . 5 . 5 . 5 : 5 . 5 . 5 . 5 . 5
= 25
C2 : 57 : 55
= 57-5
= 52
4. 356 = 3 . 100 + 5 . 10 + 6 = 3 . 102 + 5 . 10 + 6 . 100
3243 = 3 . 1000 + 2 . 100 + 4 . 10 + 3 = 3 . 103 + 2 . 102 + 4 . 10 + 3 . 100
abbc = a . 1000 + b . 100 + b . 10 + c = 4 . 103 + b . 102 + b . 10 + c . 100
xong rồi đó. mệt lắm
![](https://rs.olm.vn/images/avt/0.png?1311)
987 = 900 + 80 + 7
= 9.100 + 8.10 + 7
= 9.102 + 8.101 + 7.100
2564 = 2000 + 500 + 60 + 4
= 2.1000 + 5.100 + 6.10 + 4
= 2.103 + 5.102 + 6.101 + 4.100
= a.10000 + b.1000 + c.100 + d.10 + e
= a.104 + b.103 + c.102 + d.101 + e.100
![](https://rs.olm.vn/images/avt/0.png?1311)
538 = 5 . 100 + 3 . 10 + 8 = 5 . 102 + 3 . 101 + 8 . 100
(abcd) = a . 1000 + b . 100 + c . 10 + d = a . 103 + b . 102 + c . 101 + d . 100
356= 3*10^2 + 5* 10 ^ 1+6*10^0
3243=3*10^3+2*10^2+4*10^1+3*10^0
abbc= a*10*3+b*10^2+b*10^1+c*10^0