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=26/100+9/100+41/100+24/100
=(26+24+9+41)/100
=100/100
=1
Ta có : 13 50 + 9 100 + 41 100 + 6 25 9 100 + 41 100 ( ) + ( 13 50 + 6 25 ) 1 = 1 2 + 50 13+ 12 = 1 2 + 1 2 = 1
\(\frac{13}{50}+9\%+\frac{41}{10}+0,24\)
\(=\frac{13}{50}+\frac{9}{100}+\frac{41}{100}+\frac{24}{100}\)
\(=\frac{13}{50}+\left(\frac{9}{100}+\frac{41}{100}+\frac{24}{100}\right)\)
\(=\frac{13}{50}+\frac{74}{100}\)
\(=\frac{13}{50}+\frac{37}{50}=\frac{50}{50}=1\)
\(\frac{13}{50}+9\%+\frac{41}{100}+0,24\)
\(=\frac{26}{100}+\frac{9}{100}+\frac{41}{100}+\frac{24}{100}\)
\(=\frac{26+9+41+24}{100}\)
\(=1\)
Đơn giản hóa bài toán :
\(\frac{13}{50}+9\%+\frac{41}{100}+0,24\)
\(=\frac{26}{100}+\frac{9}{100}+\frac{41}{100}+\frac{24}{100}\)
\(=\frac{26+9+41+24}{100}\)
\(=\frac{100}{100}\)
a) X : 5 + X x\(\frac{1}{10}=0,24\)
X x \(\frac{1}{5}\)+ X x \(\frac{1}{10}=0,24\)
X x \(\left(\frac{1}{5}+\frac{1}{10}\right)\)=0,24
X x \(\frac{3}{10}\)= 0 , 2 4
X =0,8
b) X : 4 - X x \(\frac{1}{100}\)= 0,12
X x \(\frac{1}{4}\)- X x \(\frac{1}{100}\)=0,12
X x \(\left(\frac{1}{4}-\frac{1}{100}\right)\)=0,12
X x \(\frac{6}{25}\)=0,12
X =0,5
a ) x : 5 + x . \(\frac{1}{10}\)= 0,24
x . \(\frac{1}{5}\)+ x . \(\frac{1}{10}\) = 0,24
x . \(\left(\frac{1}{5}+\frac{1}{10}\right)\)= 0,24
x . \(\frac{3}{10}\)= 0,24
x = 0,24 : \(\frac{3}{10}\)
x = 0,8
b ) x : 4 - x . \(\frac{1}{100}\) = 0,12
x . \(\frac{1}{4}\)- x . \(\frac{1}{100}\)= 0,12
x . \(\left(\frac{1}{4}-\frac{1}{100}\right)\)= 0,12
x . \(\frac{6}{25}\)= 0,12
x = 0,12 : \(\frac{6}{25}\)
x = 0,5
a) \(\frac{5}{6}\)= \(\frac{15}{18}\); b) \(\frac{99}{100}\)< \(\frac{100}{99}\); c ) \(\frac{15}{17}\)> \(\frac{13}{18}\)vì \(\frac{15}{17}\)> \(\frac{15}{18}\)> \(\frac{13}{18}\);
d) \(\frac{222}{333}\)= \(\frac{2}{3}\)\(=1-\frac{1}{3}\); \(\frac{3333}{4444}\)= \(\frac{3}{4}\)= \(1-\frac{1}{4}\); vì \(\frac{1}{3}\)> \(\frac{1}{4}\)nên \(\frac{222}{333}\)< \(\frac{3333}{4444}\)
e) \(\frac{292929}{272727}\)= \(\frac{29}{27}\)= \(1+\frac{2}{17}\); \(\frac{347347}{345345}\)= \(\frac{347}{345}\)= \(1+\frac{2}{345}\)nên \(\frac{292929}{272727}\)> \(\frac{347347}{345345}\)
a)13x3x32,27+67,63x39
=39x32,27+67,63x39
=39x(32,27+67,63)
=39x100
=3900
b,= 1- [ 1/2 x 1/3 x1/4 x..... x 1/100 ]
=1/2 x 2/3 x 3/4 x .......x 99/100
= 1x2x3x......x99 / 2x3x4x...... x100 [ rút gọn ]
= 1/100
13/50+0,09+41/100+0,24
= 26/100+0,09+41/100+0,24
= (26/100+41/100)+(0,09+0,24)
=67/100+0,33
= 67/100+33/100
=100/100=1
Chúc bạn học tốt!!!