ARITHMETIC - I1

 Evaluate 18 x 369 + 331 x 18.

 

Solution

 

= 18 x 369 + 331 x 18.

 

= 18 x (369 + 331)     factoring out the common number

 

= 18 x 700   

 

= 12600      [after multiplying 18and 7 and adding two zeros on the answer]

 

Hence 18 x 369 + 331 x 18= 12600

 

TRY THIS………….

 

 

Evaluate 137 x 516 + 484 x 137.