2424+424+14134
=
=
1413+4124+2424
=
=
123+2424+353
=
=
1324+2424+242424
tính nhanh tổng sau :
\(\frac{121212}{141414}\)x \(\frac{1313}{1212}\)x\(\frac{2424}{2424}\)
\(\frac{121212}{141414}\times\frac{1313}{1212}\times\frac{2424}{2424}\)
\(=\frac{6}{7}\times\frac{13}{12}\times1\)
\(=\frac{13}{14}\)
~ Hok tốt ~
=12. 10101/ 14.10101 . 13.101/12.101. 1
rút gọn ta được: 13/14
hok tốt
kt
2453+2424=
8 *3333gach gang 2424*54
điền dấu >,<,=
\(\dfrac{23}{24}...\dfrac{2325}{2424}\)
\(\dfrac{23}{24}=\dfrac{23\times101}{24\times101}=\dfrac{2323}{2424}< \dfrac{2325}{2424}\\ \Rightarrow\dfrac{23}{24}< \dfrac{2325}{2424}\)
\(\dfrac{24}{54}\) = \(\dfrac{24:}{54:}\) = \(\dfrac{4}{9}\)
\(\dfrac{24}{54}\) = \(\dfrac{24:6}{54:6}\) = \(\dfrac{4}{9}\)
b, 2018 x ( \(\dfrac{1}{2}\) + \(\dfrac{1212}{2424}\) )
=2018
Chi tiết
2018X(1/2+1212/2424)
Rút gon 1212/2424 còn 1/2
1/2+1/2=1
Vậy 2018x1=2018
\(=2018\) x \(\left(\dfrac{1}{2}+\dfrac{1}{2}\right)\)
\(=2018\) x \(1=2018\)