Question

a.25 x 4 x 46 + 25 x 54 x 4 tính thuận tiện

Answer 1

\(25\times4\times46+25\times54\times4\)
\(\Rightarrow25\times4\times\left(46+54\right)\)
\(\Rightarrow100\times100\)
\(\Rightarrow10000\)

Answer 2

25 × 4 × 46 + 25 × 54 × 4 

=25 × 4 × ( 46 + 54 ) 

=100 × 100 

=10000

Answer 3

25 × 4 × 46 + 25 × 54 × 4 

=25 × 4 × ( 46 + 54 ) 

=100 × 100 

=10000

Answer 4

10000