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ML
2
14 tháng 8 2023
a) \(36+7=43\)
\(5+48=53\)
\(29+64=93\)
b) \(73-6=67\)
\(82-57=25\)
\(91-85=6\)
PT
1
ML
1
QT
Quoc Tran Anh Le
Giáo viên
8 tháng 12 2023
\(\begin{array}{*{20}{c}}{a)\,\,}\\{}\\{}\end{array}\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{435}\\{352}\end{array}}\\\hline{\,\,\,787}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{236}\\{528}\end{array}}\\\hline{\,\,\,\,764}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{354}\\{\,\,\,63}\end{array}}\\\hline{\,\,\,\,417}\end{array}\)
\(\begin{array}{*{20}{c}}{b)\,\,}\\{}\\{}\end{array}\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{569}\\{426}\end{array}}\\\hline{\,\,\,\,143}\end{array}\) \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{753}\\{236}\end{array}}\\\hline{\,\,\,517}\end{array}\) \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{880}\\{\,\,54}\end{array}}\\\hline{\,\,\,826}\end{array}\)
ML
2
20 tháng 4 2023
a) 57 + 28 = 85
24 + 67 = 91
46 + 39 = 85
b) 83 - 19 = 64
42 - 38 = 4
90 - 76 = 14
QT
Quoc Tran Anh Le
Giáo viên
8 tháng 12 2023
\(\begin{array}{*{20}{c}}{a)\,\,}\\{}\\{}\end{array}\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{57}\\{28}\end{array}}\\\hline{\,\,\,\,85}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{24}\\{67}\end{array}}\\\hline{\,\,\,\,91}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{46}\\{39}\end{array}}\\\hline{\,\,\,\,85}\end{array}\)
\(\begin{array}{*{20}{c}}{b)\,\,}\\{}\\{}\end{array}\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{83}\\{19}\end{array}}\\\hline{\,\,\,\,64}\end{array}\) \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{42}\\{38}\end{array}}\\\hline{\,\,\,\,04}\end{array}\) \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{90}\\{76}\end{array}}\\\hline{\,\,\,\,14}\end{array}\)
QT
Quoc Tran Anh Le
Giáo viên
8 tháng 12 2023
\(\begin{array}{*{20}{c}}{a)\,\,}\\{}\\{}\end{array}\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{536}\\{\,\,\,\,\,8}\end{array}}\\\hline{\,\,\,544}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{\,\,\,67}\\{829}\end{array}}\\\hline{\,\,\,\,996}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{432}\\{284}\end{array}}\\\hline{\,\,\,\,716}\end{array}\)
\(\begin{array}{*{20}{c}}{b)\,\,}\\{}\\{}\end{array}\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{253}\\{\,\,\,\,\,7}\end{array}}\\\hline{\,\,\,\,246}\end{array}\) \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{561}\\{\,\,\,42}\end{array}}\\\hline{\,\,\,519}\end{array}\) \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{795}\\{638}\end{array}}\\\hline{\,\,\,\,057}\end{array}\)
a) 54 + 29 - 8 = 75
b) 62 - 38 + 7 = 31
a) 54 + 29 – 8 = 83 – 8 = 75.
b) 62 – 38 + 7 = 24 + 7 = 31.