a) 1872 : (3 × 4)

=1872:12

=156

1872 : (3 × 4)

=1872:3:4

=624:4

=156

b) 14994 : (6 × 7)

=14994:42

=357

14994 : (6 × 7)

=14994:6:7

=2499:7

=357

c) (125 × 63 ) : 3

=7875:3

=2625

(125 × 63 ) : 3

=125x63:3

=125x21

=2625

d) (198 108) :6 : viet ro dau bai nhe

a) 1872 : (3 × 4)

C1:

=1872:12

=156

C2:

=1872:3:4

=624:4

=156
b) 14994 : (6 × 7)

C1:

=1499:42

=357

C2:

=14994:6:7

=2499:7

=357
c) (125 × 63 ) : 3

C1:

=7875:3

=2625

C2:

=125x63:3

=125x(63:3)

=125x21

=2625

d) (198 108) :6

xem lại đề

a)Cách 1: 1872 : (3 × 4)

=1872:12

=156

Cách 2 :1872 : (3 × 4)

=1872:3:4

=624:4

=156

b)Cách 1: 14994 : (6 × 7)

=14994:42

=357

Cách 2:14994 : (6 × 7)

=14994:6:7

=2499:7

=357

c)Cách 1 (125 × 63 ) : 3

=7875:3

=2625

Cách 2:(125 × 63 ) : 3

=125x63:3

=125x21

=2625