1111 + 2222 = 3333

3333 + 2222 = 5555 

5555 + 4444 = 9999 

4444 + 3333 = 7777 

7777 + 1111 = 8888 

8888 + 1111 = 9999 

4444 + 2222 = 6666 

11111 + 22222 = 33333 

1111 + 2222 = 3333

3333 + 2222 = 5555

5555 + 4444 = 9999

4444 + 3333 = 7777

7777 + 1111 = 8888

8888 + 1111 = 9999

4444 + 2222 = 6666

11111 + 22222 = 33333

3333

5555

9999

7777

8888

6666

33333

hok tốt

11111+11111=22222

2222+2222=4444

333+333=666

4+4=8

11111 + 11111 = 22222

2222 + 2222 = 4444

333 + 33 = 366

4 + 4 = 8 

11111+11111=22222

2222+22222=44442

333+33=663

4+4=8

tk mk nha

Bài 1

\(\left(1-\dfrac{1}{99}\right)\times\left(1-\dfrac{1}{100}\right)\times...\times\left(1-\dfrac{1}{2006}\right)\)

\(=\dfrac{98}{99}\times\dfrac{99}{100}\times...\times\dfrac{2005}{2006}\)

\(=\dfrac{98}{2006}\)

\(=\dfrac{49}{1003}\)

Bài 2

\(\dfrac{111}{333}=\dfrac{111:111}{333:111}=\dfrac{1}{3}\)

\(\dfrac{2222}{4444}=\dfrac{2222:2222}{4444:2222}=\dfrac{1}{2}\)

Do \(3>2\Rightarrow\dfrac{1}{3}< \dfrac{1}{2}\)

Vậy \(\dfrac{111}{333}< \dfrac{2222}{4444}\)

Bài 1.

\(\left(1-\dfrac{1}{99}\right)\times\left(1-\dfrac{1}{100}\right)\times...\times\left(1-\dfrac{1}{2006}\right)\)

\(=\dfrac{98}{99}\times\dfrac{99}{100}\times...\times\dfrac{2005}{2006}\)

\(=\dfrac{98\times99\times...\times2005}{99\times100\times...2006}\)

\(=\dfrac{98}{2006}\)

\(=\dfrac{49}{1003}\)

Bài 2.

Có: \(\dfrac{111}{333}=\dfrac{111}{3\times111}=\dfrac{1}{3}\)

\(\dfrac{2222}{4444}=\dfrac{2222}{2\times2222}=\dfrac{1}{2}\)

Vì \(\dfrac{1}{3}< \dfrac{1}{2}\) nên \(\dfrac{111}{333}< \dfrac{2222}{4444}\)

4 = 2^2 => 4 ^a =2^2a 

mà 2222*2 =4444 => 2^4444=4^2222

a hai cái bằng nhau

b 3 ^ 500 lớn hơn

a)Ta có :  \(4^{2222}\) \(=4^{2.1111}=\left(4^2\right)^{1111}=16^{1111}\)

\(2^{4444}=2^{4.1111}=\left(2^4\right)^{1111}=16^{1111}\)

Vì \(16^{1111}=16^{1111}\Rightarrow4^{2222}=2^{4444}\)

b) Ta có : \(5^{300}=5^{3.100}=\left(5^3\right)^{100}=125^{100}\)

\(3^{500}=3^{5.100}=\left(3^5\right)^{100}=243^{100}\)

Vì \(125^{100}< 243^{100}\Rightarrow5^{300}< 3^{500}\)

Có: \(4^{2222}=\left(2^2\right)^{2222}=2^{2\cdot2222}=2^{4444}\)

Vậy \(4^{2222}=2^{4444}\)

\(4^{2222}=\left(4^2\right)^{1111}=16^{1111}\)

\(2^{4444}=\left(2^4\right)^{1111}=16^{1111}\)

Mà : \(16^{1111}=16^{1111}\)

\(\Rightarrow4^{2222}=2^{4444}\)

Ta có:

\(4^{2222}=\left(2^2\right)^{2222}=2^{4444}.\)

Vì \(2^{4444}=2^{4444}.\)

=> \(4^{2222}=2^{4444}.\)

Chúc bạn học tốt!

Trả lời:

11111 + 1111 = 12222

2222 + 2222 = 4444

3333 + 7777 = 11110

Chúc bn hok tốt

11111+1111=12222

2222+2222=4444

3333+7777=11110

Mik tính nhẩm, có gì sai sót mong bạn thông cảm ạ*cúi đầu*

các bạn ko nên đăng

những câu hỏi quá dễ

nhằm gian lận điểm

hỏi đáp đó ! 

= 183331

TL

=5422220

nha

HT

nhầm =18331 nha

HT