v:

Kinh thế

phép tính j mà dài wa v

Hướng dẫn giải:

424 : 8 = 53

261 : 29 = 9

646 : 34 = 19

\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{326}\\{253}\end{array}}\\\hline{\,\,\,\,579}\end{array}\)                               \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{432}\\{261}\end{array}}\\\hline{\,\,\,\,693}\end{array}\)

\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{732}\\{\,\,55}\end{array}}\\\hline{\,\,\,787}\end{array}\)                              \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{643}\\{\,\,\,50}\end{array}}\\\hline{\,\,\,\,693}\end{array}\)

Đặt tính rồi tính:

486 + 303= 789

670 – 261 = 409

106 x 9 = 954

872 : 4 = 218

tham khảo

bạn nhìn ở câu cuối ý

1499 : 65 = 23 ( dư 4) 

1499 : 65 = 23 ( dư 4) 

\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{47}\\{43}\end{array}}\\\hline{\,\,\,90}\end{array}\)                                     \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{43}\\{47}\end{array}}\\\hline{\,\,\,90}\end{array}\)

\(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{65}\\{28}\end{array}}\\\hline{\,\,\,\,93}\end{array}\)                                     \(\begin{array}{*{20}{c}}{ + \begin{array}{*{20}{c}}{28}\\{65}\end{array}}\\\hline{\,\,\,93}\end{array}\)

đáp án lần lượt:90,90,93,93