Lucy is thinking of a number. When she rounds her number to the nearest ten it is 200. What number might Lucy be thinking of?
To find the number Lucy might be thinking of, we need to determine which number rounds to 200 when rounded to the nearest ten.
When we round a number to the nearest ten, we look at the ones digit of the number. If the ones digit is 0, 1, 2, 3, or 4, we round down. If the ones digit is 5, 6, 7, 8, or 9, we round up.
Since the number rounds to 200, we know it is between 195 and 205. Now, let's consider the ones digit:
To round down to 200, the ones digit should be 0, 1, 2, 3, or 4.
To round up to 200, the ones digit should be 5, 6, 7, 8, or 9.
Looking at the options between 195 and 205, the number that rounds to 200 is 196.
So, Lucy might be thinking of the number 196.