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`Answer:`

\(A=\left(1^{100}+2^{100}+...+10^{100}\right)\left(5^{10}-25^5\right)\)

\(=\left(1^{100}+2^{100}+...+10^{100}\right)[5^{10}-\left(5^2\right)^5]\)

\(=\left(1^{100}+2^{100}+...+10^{100}\right)\left(5^{10}-5^{10}\right)\)

\(=\left(1^{100}+2^{100}+...+10^{100}\right).0\)

\(=0\)

\(B=\left(2^5+3^5+4^5\right)\left(1^2+2^2+...+100^2\right)\left(4^{10}-2^{20}\right)\)

\(=\left(2^5+3^5+4^5\right)\left(1^2+2^2+...+100^2\right)\left(2^{2.10}-2^{20}\right)\)

\(=\left(2^5+3^5+4^5\right)\left(1^2+2^2+...+100^2\right).0\)

\(=0\)

1)50+50+50+100/5

=50+50+50+20

=100+70

=170

2)100/100+20/10+5

=1+2+5

=3+5

=8

3)200/100+50/10+6

=2+5+6

=7+6

=13

minh tr nha ban

100⁵ : 100³ = 100²

10² . 10¹ = 10³

500²⁰⁰ . 500¹⁰ = 500²¹⁰

10⁵ . 10² = 10⁷

100³⁰ . 100¹⁰ = 100⁴⁰

200¹⁰⁰ : 200¹⁰ = 200⁹⁰

100²⁰ . 100¹⁰ = 100³⁰

300¹⁰⁰ . 300¹⁰⁰ = 300²⁰⁰

100⁵ : 100³

= 100^{5 - 3}

= 100²

10² . 10¹

= 10^{2 + 1}

= 10³

500²⁰⁰ . 500¹⁰

= 500^{200 + 10}

= 500²¹⁰

10⁵ . 10²

= 10^{5 + 2}

= 10⁷

100³⁰ . 100¹⁰

= 100^{30 + 10}

= 100⁴⁰

200¹⁰⁰ : 200¹⁰

= 200^{100 - 10}

= 200¹⁹⁰

100²⁰ . 100¹⁰

= 100^{20 + 10}

= 100³⁰

300¹⁰⁰ .300¹⁰⁰

= 300^{100 + 100}

= 300²⁰⁰

5/100=0,05

8/100<0,8000

1/10>1/100

5/100...=..0,05

8/100..>...0,8000

1/10...=...1/100

\(\frac{5}{100}=0,05\)

\(\frac{8}{100}< 0,8000\)

\(\frac{1}{10}>\frac{1}{100}\)

 #Hok tốt# 

\(\dfrac{7}{10}=0,7;\dfrac{7}{100}=0,07;6\dfrac{38}{100}=6,38;\dfrac{2014}{1000}=2,014;\dfrac{3}{2}=1,5;\dfrac{2}{5}=0,4;\dfrac{5}{8}=0,625;1\dfrac{1}{4}=1,25;6\dfrac{38}{100}=6,38\)

19/20x2/100+19/20x2/100

= [19/20+19/20]x2/100

= 38/20x2/100

= 19/500

75/76x102/100-75/76x2/100

= [102/100-2/100]x75/76

= 1x75/76

= 75/76

3x7/10+7/10x5+2x7/10

= [3+5+2]x7/10

= 10x7/10

= 7

giá trị biểu thức 

2/5+2/3x3/4

= 2/5+1/6

= 17/30

1/2x1/3-1/8

= 1/6-1/8

= 1/24

[1/2+1/3]:3/9

= 5/6:3/9

= 5/2

                       nhớ tick cho tớ nhé

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