Kết quả: 20 586

\(\dfrac{438}{15}=\dfrac{146}{5}=29.2\)

29.2

10592 + 79438 = 90 030

a)   438 906 + 45 029 = 483935

b)   428 × 306 = 130968

a)   438 906 + 45 029 = 483935

b)   428 × 306 = 130968

a)

    438906 +       45029 ¯     483935

b)

        428 ×         306   ¯ 130968

a) 8980

53 245

90 030

6195 + 2785 8980

47836 + 5409 53245

10592 + 79438 90030

Bài 1:

a: 785*6+438=4710+438=5148

b: =873(6+1+2)=873*9=7857

c: 931+15822=16753