ARITHMETICS 1

Evaluate 13 x 369 + 331 x 13.

Solution

= 13 x 369 + 331 x 13.

= 13 x (369 + 331)     factoring out the common number

= 13 x 700   

= 9100      [after multiplying 16 and 7 and adding two zeros on the answer]

Hence 13 x 369 + 331 x 13= 9100

TRY THIS………….

Evaluate 127 x 516 + 484 x 127.