Hi, my name is Cheri DeVore and I teach at Flintstone Elementary. Today, I'm going to model addition to 1,000 using an open number line.
The word problem I'm going to model for you today is, there are
237 students at Hershey Park.
392 more students arrived. How many total students are at the park?
The first thing I'm going to do is I'm going to circle the important information.
237,
392 and I'm going to underline the question, how many total students are at the park?
Now, I'm going to write my equation.
237 plus
392 equals. I'm going to draw on my open number line.
Starting with 392 because it is the greater value. Then I'm going to add 200.
My first hundred I get 492 and then my second hundred I get 592.
Next, I'm going to decompose thirty into three groups of ten.
592 plus ten more is 602.
Plus ten more is 612. In my last group of 10 is 622.
Finally, I'm going to add seven ones.
When I add 7 ones I get 629.
To solve my equation how many total students are at the park? I know that there are 629 total students.
