Question

Đặt tính rồi tính.

51 + 18                                4 + 62   

78 – 38                                95 – 70  

Answer 1

\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{51}\\{18}\end{array}}\\\hline{\,\,\,\,69}\end{array}\)                                 \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{\,\,\,4}\\{62}\end{array}}\\\hline{\,\,\,66}\end{array}\)

\(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{78}\\{38}\end{array}}\\\hline{\,\,\,\,40}\end{array}\)                                  \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{95}\\{70}\end{array}}\\\hline{\,\,\,\,25}\end{array}\)