Step 1: List the numbers from 291 to 300 and look at every digit in each: 291, 292, 293, 294, 295, 296, 297, 298, 299, 300. Step 2: The hundreds digit is 2 for nine of these numbers (291-299) and 3 for 300, giving 9 even hundreds-digits. Step 3: The tens digit is 9 for nine of these numbers (291-299) and 0 for 300, giving 1 even tens-digit. Step 4: The units digits run 1,2,3,4,5,6,7,8,9,0; the even ones among these are 2,4,6,8,0, giving 5 even units-digits. Step 5: Add up all the even digits written: 9 + 1 + 5 = 15. So you will write an even numeral 15 times.