Question

1. 

2174 x 312 + 688 x 2174 - 16 x 25

Answer 1

2174 x 312 + 688 x 2174 - 16 x 25 

= 678288 + 1495712 - 400

= 2174000 - 400

= 2173600

Answer 2

=2174x (312+688)-16x 25

=2174x 1000-400

=2174000-400

=2173600

Answer 3

= 2174 x ( 312 + 688) - 16 x 25

= 2174 x 1000 - 16 x 25

= 2174000 - 400

= 2173600

Answer 4

Ta có : 2174 x 312 + 688 x 2174 - 16 x 25 

       =    2174 x ( 312 + 688 )   -      16 x 25

       =  2174  x 1000    -  16 x 25

       = 2174000 - 400 

       = 2173600