6400
6400
6400
6400
6400
Answer: 600
79% of 6400 = 79% * 6400 = 0.79 * 6400 = 5,056
To round 6388 to the nearest 100, we look at the hundreds place, which is the 3 in this case. Since the digit to the right of the hundreds place is 8, which is equal to or greater than 5, we round up. Therefore, 6388 rounded to the nearest 100 is 6400.
Half of 6400 is 3200.
6400 + 3500 = 9900
10000 - 6400 = 3600
6400