1/997+46=997+3+43
=(997+3)+43
=1000+43
=1043
2>298+49=298+2+47
=(298+2)+47
=300+47
=347
\(1.997+46=997+\left(3+43\right)\)
\(=\left(997+3\right)+43\)
\(=1000+43\)
\(=1043\)
\(2.298+49=298+\left(2+47\right)\)
\(=\left(298+2\right)+47\)
\(=300+47\)
\(=347\)
\(3.176+84=176+\left(4+80\right)\)
\(=\left(176+4\right)+80\)
\(=180+80\)
\(=260\)
\(4.492+57=492+\left(49+8\right)\)
\(=\left(492+8\right)+49\)
\(=500+49\)
\(=549\)
Mik nha !!!!!!!!!!!!!!!!!!!!!!!!!!!! các bạn là tốt nhất