Multiply 12 and 12 which is 144 and then add the exponents which would be 10 and so your answer would be 144*10
With 98x50 its like there are 98 fiveties. In 97x 50 there are 97 fiveties. There is one more 50 in 98x50.
The answer to your question would be 60 percent all you do is divide that and move the decimal 2 places to the left.
