Đặt tính rồi tính:
65 261 – 3 2452
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\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{326}\\{253}\end{array}}\\\hline{\,\,\,\,579}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{432}\\{261}\end{array}}\\\hline{\,\,\,\,693}\end{array}\)
\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{732}\\{\,\,55}\end{array}}\\\hline{\,\,\,787}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{643}\\{\,\,\,50}\end{array}}\\\hline{\,\,\,\,693}\end{array}\)
Đặt tính rồi tính:
486 + 303= 789
670 – 261 = 409
106 x 9 = 954
872 : 4 = 218
\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{47}\\{43}\end{array}}\\\hline{\,\,\,90}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{43}\\{47}\end{array}}\\\hline{\,\,\,90}\end{array}\)
\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{65}\\{28}\end{array}}\\\hline{\,\,\,\,93}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{28}\\{65}\end{array}}\\\hline{\,\,\,93}\end{array}\)
32809