Ms. Rivera has 134 crayons, which when rounded to the nearest 100, would be 100 crayons because the tens digit is less than 5.
To answer the question about rounding, we need to determine which multiple of 100 is closest to 134 crayons. When rounding to the nearest hundred, we look at the tens digit to decide if the number rounds up or down. In the case of 134, since the tens digit is a 3, which is less than 5, we round down. Therefore, the number of crayons Ms. Rivera has, when rounded to the nearest hundred, is 100 crayons.