Video: Using Repeated Addition to Count the Number of Squares in a Partitioned Rectangle

Victoria started dividing this rectangle into equal squares. Which addition sentence tells you how many squares there will be when she is finished?

01:44

Video Transcript

Victoria started dividing this rectangle into equal squares. Which addition sentence tells you how many squares there will be when she is finished?

We can see that Victoria has a green rectangle shape. And on the rectangle, she started to draw lines to divide it into equal squares. Across the top of the rectangle, Victoria has drawn a row of five squares. This goes from one side of the rectangle to the other. So, we could say that rectangle is five squares long. But how many rows of five squares can Victoria fit within this rectangle?

We can see that she’s also completed a column of squares. And there are two squares in that column. This means that when she’s finished dividing the rectangle into equal squares, there should be two rows, and each row should contain five squares. And we can use this to work out how many square there should be when she’s finished.

The first row will have five squares. And the second row will have five squares. Five plus five equals 10 squares altogether. And to check our answer, we could draw in the rest of Victoria’s lines. We can see that she divides the whole rectangle into equal squares. She’ll create two rows of five. The addition sentence that tells us how many squares there’ll be when she’s finished is five plus five equals 10. The rectangle has been split into 10 equal squares.

Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy.