Question

 Điền dấu (>, <, =) thích hợp vào chỗ chấm.   

5 + 7  .?.  7 + 5                 5 + 8 .?.  8 + 3

9 + 2  .?.  3 + 9                 6 + 8  .?.  8 + 6

Answer 1

\(\underbrace {5\, + 7}_{12}\;\;\,\, = \,\,\,\,\;\underbrace {7 + 5}_{12}\)

\( \underbrace {5 + 8}_{13}\;\;\;\, > \;\;\;\underbrace {8 + 3}_{11}\)

\(\underbrace {9 + 2}_{11}\;\;\; < \;\;\,\,\underbrace {3 + 9}_{12}\)

\(\underbrace {6 + 8}_{14}\;\;\; = \,\,\,\;\underbrace {8 + 6}_{14}\)