Math: Squares and Square Roots, Lesson 18
The square root of 1 is
1
1 squared is written
1 x 1 = 1
The square root of 100 is
10
10 squared is written
10 x 10 = 100
10 squared =
100
The square root of 121 is
11
11 squared is written
11 x 11 = 121
The square root of 144 is
12
12 squared is written
12 x 12 = 144
11 squared =
121
Use a calculator to solve: the square root of 169 =
13
Use a calculator to solve: the square root of 196 =
14
12 squared =
144
Use a calculator to solve: the square root of 225 =
15
4 squared =
16
Use a calculator to solve: the square root of 256 =
16
Use a calculator to solve: 13 squared =
169
Use a calculator to solve: the square root of 289 =
17
Use a calculator to solve: the square root of 324 =
18
Use a calculator to solve: the square root of 361 =
19
Use a calculator to solve: 14 squared =
196
The square root of 4 is
2
2 squared is written
2 x 2 = 4
Use a calculator to solve: the square root of 400 =
20
Use a calculator to solve: 15 squared =
225
5 squared =
25
Use a calculator to solve: 16 squared =
256
Use a calculator to solve: 17 squared =
289
The square root of 9 is
3
3 squared is written
3 x 3 = 9
Use a calculator to solve: 18 squared =
324
6 squared =
36
Use a calculator to solve: 19 squared =
361
2 squared =
4
The square root of 16 is
4
Mom's waffle iron makes square waffles. Each waffle has 16 squares. How many squares are along one side of each waffle?
4 squares are along each waffle side because the waffle is a square and the square root of 16 is 4.
4 squared is written
4 x 4 = 16
Use a calculator to solve: 20 squared =
400
7 squared =
49
The square root of 25 is
5
5 squared is written
5 x 5 = 25
The square root of 36 is
6
6 squared is written
6 x 6 = 36
8 squared =
64
The square root of 49 is
7
7 squared is written
7 x 7 = 49
The square root of 64 is
8
8 squared is written
8 x 8 = 64
9 squared =
81
3 squared =
9
The square root of 81 is
9
9 squared is written
9 x 9 = 81
The Pythagorean theorem is read
a squared plus b squared = c squared
The longest side (opposite the right angle) is
called the hypotenuse.
The other two sides are
called the legs.
A square root is
one of a number's two equal factors.
Finding the square root of a number is
the inverse of squaring a number.
When a whole number is squared
the product is a perfect square.
A square is
the product of a number times itself.
Since 5 squared = 25,
the square root of 25 is 5.
In a right triangle,
the three sides are related.
The exponent 2 is
used to express a number squared.
