\(10^2+10^2+10+10+5\)

\(=100+100+10+10+5\)

\(=100\times2+10\times2+5\)

\(=200+20+5\)

\(=225\)

\(5\times10+10\times5\)

\(=\left(5+5\right)\times10\)

\(=10\times10\)

\(=100\)

10² + 10² + 10 + 10 + 5

= 100 + 100 + 10 + 10 + 5

= 225

5 . 10 + 10 . 5

= 10 . ( 5 + 5 )

= 10 . 10

= 100

a,

\(=\frac{1+2+3+4+5+6+7+8+9}{10}=\frac{45}{10}=\frac{9}{2}\)

b,\(=9\times\left(\frac{26\times10101}{27\times10101}+\frac{8\times11111}{9\times11111}\right)=9\times\left(\frac{26}{27}+\frac{8}{9}\right)=9\times\frac{50}{27}=\frac{50}{3}\)

k cho mk nha!!!!!!!!!!!!!

Mk cần gấp các bạn ơi !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!?

10 x 10 : 10 + 10 - 10 + 10

= 100 : 10 + (10 -  10 ) + 10

=     10      + 10

=    20 

\(\frac{34}{10}\)

\(\frac{10}{10}+\frac{9}{10}+\frac{8}{10}+\frac{7}{10}\)

\(=\frac{10+9+8+7}{10}\)

\(=\frac{34}{10}\)

\(=\frac{17}{5}\)

\(=\frac{34}{10}\) minh minh lai

\(\frac{34}{10}=3,4\)

\(=0,3+0,6+0,4+0,7\)

\(=2\)

mong các bạn trả lời câu hỏi nhé

9/2

k mình nha

= \(\frac{9}{2}\)

Đề bài là gì bạn ơi có chỗ ...

chưa có đề bạn ơi! Y_Y

Hok tốt ^_^

\(=\frac{1+2+3+4+5+6+7+8+9}{10}\)

\(=\frac{45}{10}=\frac{9}{2}\)

\(=\frac{45}{10}=\frac{9}{2}\)

10/10/10=10/10:10=10/10.1/10=10/100=1/10