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B
1
QT
Quoc Tran Anh Le
Giáo viên
11 tháng 12 2023
\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{36}\\{27}\end{array}}\\\hline{\,\,\,\,63}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{18}\\{52}\end{array}}\\\hline{\,\,\,70}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{83}\\{\,\,9}\end{array}}\\\hline{\,\,\,\,92}\end{array}\)
\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{74}\\{19}\end{array}}\\\hline{\,\,\,\,93}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{55}\\{25}\end{array}}\\\hline{\,\,\,80}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{\,\,\,9}\\{61}\end{array}}\\\hline{\,\,\,\,70}\end{array}\)
QT
Quoc Tran Anh Le
Giáo viên
11 tháng 12 2023
a) Các phép tính có nhớ là:
44 + 48; 80 – 25 ; 31 + 9.
b) Đặt tính rồi tính:
\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{44}\\{48}\end{array}}\\\hline{\,\,\,\,92}\end{array}\) \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{80}\\{25}\end{array}}\\\hline{\,\,\,55}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{31}\\{\,\,\,9}\end{array}}\\\hline{\,\,\,\,40}\end{array}\)
\(\begin{array}{*{20}{c}}{ - \begin{array}{*{68}{c}}{68}\\{17}\end{array}}\\\hline{\,\,\,\,51}\end{array}\)
HQ
Hà Quang Minh
Giáo viên
20 tháng 12 2023
a) 8 + 4 = 12 15 – 6 = 9 9 + 2 = 11 6 + 8 = 14
4 + 8 = 12 15 – 9 = 6 11 – 9 = 2 14 – 8 = 6
b)
\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{48}\\{27}\end{array}}\\\hline{\,\,\,75}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{25}\\{75}\end{array}}\\\hline{\,100}\end{array}\) \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{80}\\{\,\,7}\end{array}}\\\hline{\,\,\,73}\end{array}\) \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{100}\\{\,\,\,\,\,8}\end{array}}\\\hline{\,\,\,\,\,\,92}\end{array}\)
\(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{82}\\{55}\end{array}}\\\hline{\,\,\,27}\end{array}\) \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{50}\\{39}\end{array}}\\\hline{\,\,\,11}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{91}\\{\,\,9}\end{array}}\\\hline{100}\end{array}\) \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{100}\\{\,\,28}\end{array}}\\\hline{\,\,\,\,\,72}\end{array}\)
c) 42 + 18 – 10 = 60 – 10 = 50
60 – 13 + 23 = 47 + 23 = 70
B
1
HQ
Hà Quang Minh
Giáo viên
20 tháng 12 2023
\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{58}\\{17}\end{array}}\\\hline{\,\,\,\,\,75\,}\end{array}\) \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{85}\\{68}\end{array}}\\\hline{\,\,\,17}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{49}\\{\,\,9}\end{array}}\\\hline{\,\,\,58}\end{array}\)
\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{31}\\{69}\end{array}}\\\hline{\,\,100}\end{array}\) \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{100}\\{\,\,24}\end{array}}\\\hline{\,\,\,\,\,76}\end{array}\) \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{72}\\{\,\,6}\end{array}}\\\hline{\,\,\,\,66}\end{array}\)
HQ
Hà Quang Minh
Giáo viên
20 tháng 12 2023
\(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{71}\\{48}\end{array}}\\\hline{\,\,\,23}\end{array}\) \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{52}\\{36}\end{array}}\\\hline{\,\,\,\,16}\end{array}\)
\(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{43}\\{17}\end{array}}\\\hline{\,\,\,26}\end{array}\) \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{64}\\{29}\end{array}}\\\hline{\,\,\,35}\end{array}\)
QT
Quoc Tran Anh Le
Giáo viên
11 tháng 12 2023
\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{62}\\{24}\end{array}}\\\hline{\,\,\,\,86}\end{array}\) \(\begin{array}{*{20}{c}}{ - \begin{array}{*{20}{c}}{37}\\{15}\end{array}}\\\hline{\,\,\,\,22}\end{array}\) \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{\,\,\,8}\\{41}\end{array}}\\\hline{\,\,\,\,49}\end{array}\)
7 tháng 12 2023
64 - 25 = 39
56 + 39 = 95
21 + 59 = 80
99 - 53 = 46
đặt tính nha cụ ơi
\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{61}\\{\,\,\,9}\end{array}}\\\hline{\,\,\,\,\,70}\end{array}\)
• 1 cộng 9 bằng 10, viết 0, nhớ 1.
• 6 thêm 1 bằng 7, viết 7
\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{53}\\{17}\end{array}}\\\hline{\,\,\,\,70}\end{array}\)
• 3 cộng 7 bằng 10, viết 0, nhớ 1.
• 5 cộng 1 bằng 6, thêm 1 bằng 7, viết 7.
\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{42}\\{18}\end{array}}\\\hline{\,\,\,\,\,60}\end{array}\)
• 2 cộng 8 bằng 10, viết 0, nhớ 1.
• 4 cộng 1 bằng 5, thêm 1 bằng 6, viết 6.