Question

4 x 25 + 16 x 25 +25

Answer 1

4 x 25 + 16x25 + 25

= 100 + 4x(4x25) + 25

= 125 + 4x100

= 125 + 400 = 525

Answer 2

\(25\times4+16\times25+25\)

\(=25\times\left(4+16+1\right)\)

\(=25\times21\)

\(=25\times\left(10+10+1\right)\)

\(=25\times10+25\times10+25\)

\(=250+250+25\)

\(=525\)

Answer 3

4 × 25 + 16 × 25 + 25

= 100 + 4 × ( 4 × 25 )

= 25 + 4 × 100

= 125 + 400 = 525