Question

Đặt tính rồi tính. 

80 + 18              54 + 27                30 + 70

30 – 13              32 – 15                100 – 50

Answer 1

\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{80}\\{18}\end{array}}\\\hline{\,\,\,98}\end{array}\)                          \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{54}\\{27}\end{array}}\\\hline{\,\,\,\,81}\end{array}\)                                 \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{30}\\{70}\end{array}}\\\hline{\,\,100}\end{array}\)

\(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{30}\\{13}\end{array}}\\\hline{\,\,\,\,17}\end{array}\)                            \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{32}\\{15}\end{array}}\\\hline{\,\,\,\,17}\end{array}\)                          \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{100}\\{\,\,50}\end{array}}\\\hline{\,\,\,\,\,\,50}\end{array}\)