18 + 18 = ...	27 + 25 = ...	45 + 46 = ...	17 + 39 = ...
39 + 41 = ...	39 + 53 = ...	35 + 57 = ...	46 + 5 = ...
64 + 27 = ...	27 + 23 = ...	19 + 67 = ...	44 + 47 = ...
18 + 67 = ...	75 + 17 = ...	66 + 16 = ...	28 + 26 = ...
19 + 35 = ...	14 + 77 = ...	48 + 8 = ...	57 + 29 = ...

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{49}\\{\,\,\,3}\end{array}} \\\,\,\,\,52\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{79}\\{\,\,\,4}\end{array}} \\\,\,\,\,\,83\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{37}\\{\,\,\,7}\end{array}} \\\,\,\,\,44\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{88}\\{\,\,\,9}\end{array}} \\\,\,\,\,97\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{29}\\{\,\,\,8}\end{array}} \\\,\,\,\,37\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{33}\\{\,\,\,9}\end{array}} \\\,\,\,\,42\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{76}\\{\,\,\,5}\end{array}} \\\,\,\,\,\,81\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{67}\\{\,\,\,6}\end{array}} \\\,\,\,\,73\end{array}\)

28 + 28 = 56

57 + 17 = 74

56 + 8 = 64

27 + 7 = 34

37 + 24 = 61

55 + 27 = 82

12 + 87 = 99

18 + 18 = 36

79 + 2 = 81

14 + 7 = 21

34 + 20 = 54

90 + 5 = 95

36 + 25 = 61

72 + 8 = 80

81 + 11= 92

12 + 19 = 31

37 + 48 = 85

5 + 29 = 34

69 + 27 = 96

72 + 26 = 98