Tom had a very challenging fraction multiplication problem to do,
but his sister said it was really easy to do mentally. Can you fi nd
the answer mentally? Explain how.
x
76
81
80
76
To find the answer mentally, you can break down the multiplication into simpler calculations.
First, multiply 80 by 80 which equals 6400.
Next, multiply 80 by 76 which equals 6080.
Then, multiply 76 by 80 which equals 6080.
Finally, multiply 76 by 76 which equals 5776.
Adding all these results together: 6400 + 6080 + 6080 + 5776 = 24336.
So, the answer is 24336.