Question

[Buddy]

Chọn kết quả đúng với mỗi phép tính:   

 

Answer 1

[Hà Quang Minh]

Đặt tính rồi tính ta được:

\(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{52}\\{17}\end{array}}\\\hline{\,\,\,35}\end{array}\)                      \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{91}\\{84}\end{array}}\\\hline{\,\,\,\,\,\,7}\end{array}\)                     \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{80}\\{12}\end{array}}\\\hline{\,\,\,68}\end{array}\)                     \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{40}\\{31}\end{array}}\\\hline{\,\,\,\,\,\,9}\end{array}\)

\(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{70}\\{\,\,2}\end{array}}\\\hline{\,\,\,68}\end{array}\)                      \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{40}\\{\,\,5}\end{array}}\\\hline{\,\,\,35}\end{array}\)                     \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{90}\\{81}\end{array}}\\\hline{\,\,\,\,\,\,9}\end{array}\)                     \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{30}\\{23}\end{array}}\\\hline{\,\,\,\,\,\,7}\end{array}\)

Answer 2

[Hà Quang Minh]