Question

What must be subtracted from $25\times 25toequal150\times 4$

Answer 1

Step 1

$25\times 25=\stackrel{2}{2}5\times \underset{–}{25}125\underset{–}{50}\underset{–}{625}$

= 625

$150\times 4=150\times 4=\stackrel{2}{1}50\times \underset{–}{4}\underset{–}{600}$

=600

Step 2

Number to be subtracted from 625 to get 600

Answer = 5