Question

[Trần Thu Hà]

a). 125 x 12 + 12 x 874 + 12
b). 34,64 x 46 + 34,64 x 53 + 34,64
c). 456 x 45 + 456 x 10 – 456 x 55

Answer 1

[Huỳnh Thị Minh Huyền]

a). 125 x 12 + 12 x 874 + 12

=(125+874+1)x12

=1000x12

=12000

b). 34,64 x 46 + 34,64 x 53 + 34,64

=34,64x(46+53+1)

=34,64x100

=3464

c). 456 x 45 + 456 x 10 – 456 x 55

=456x(45+10-55)

=456x0

=0

Answer 2

[Trần Thu Hà]

a) 125 x12 +12 x 874 + 12 x 1

=12 x (125 + 874 + 1)

=12 x 1000

=12000

b)34,64 x 46 + 34,64 x 53 +34,64 x 1

=34,64 x (46 + 53 + 1)

=34,64 x 100

=3464

c) 456 x 45 +456 x 10 - 456 x 55 

=456 x (45 +10 - 55)

=456 x 0

= 0