Rounding on a Number Line

This past week we have tackled rounding three digit numbers to the hundreds and tens place!  While tricks are quick and most of the time correct, being able to show where any given number falls on a number line is the best way to prove a deep understanding for what rounding is.  We also talk about the importance of understanding the value of the digits, and knowing that the 8 in 987 doesn’t mean 8…it means 8 groups of 10, or 80!

This next week, we will be looking at rounding numbers with 4-digits to the thousands, hundreds, and tens places. Get ready for some frustration!  The more practice we give them, the easier rounding will be.  Check out this picture of Trey working hard to use a number line to round!