How do you find the total number
of squares in a rectangle?
In this lesson you will learn how
to find the total number of
same-size squares in a
rectangle by dividing it into rows
and columns.
Let’s Review
We know that it is important that the partition lines
for both the rows and columns are the same
distance apart in order to have same-size squares.
The rows
and
columns
have to be
equally
spaced.
Core Lesson
Once you have your rectangle partitioned
into same-size squares, you can easily find
the total number of squares.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
You can also say
there are 3 rows
of 5 rather than
counting each
square.
Core Lesson
Let’s count the squares in this rectangle by counting
the squares in each row.
2
There are 8 total
squares in this
rectangle.
4
6
8
Core Lesson
You can also count the squares by counting the
squares in each column.
3
6
9
12
15
18
21
7 columns of
3 is 21 total
squares.
In this lesson you have
learned how to find the total
number of same-size
squares in a rectangle by
dividing it into rows and
columns.