Algebra

Lesson 1-3Square Roots

Warm UpRound to the nearest tenth.

1. 3.14 2. 1.97

Find each square root.

3. 4.

Write each fraction in simplest form.

5. 6.

Simplify.

7. 8.

3.1 2.0

4 25

Bell Work

Algebra

Lesson 1-3Square Roots

Quiz 1A

• Thursday• Lessons 1-1 through 1-5

Math Humor

• Teacher: Let’s find the square root of 1 million.

• Student: Don’t you think that is a bit radical?

Bring to Class

• Textbook• 3-Ring Notebook• Paper• Pencils and eraser• Eagerness and Curiosity

Common Courtesies

• Please… – Come in, get settled, and get ready– If you are late, enter

inconspicuously – Don’t be the kid your fellow

students wish is absent

• Enjoy, Participate, Contribute, Learn

I WILL BE ABLE TO:

(1) ESTIMATE SQUARE ROOTS.

(2) SIMPLIFY, ADD, SUBTRACT, MULTIPLY, AND DIVIDE SQUARE ROOTS.

Today’s Learning Target:

Find the two perfect squares that 27 lies between.

Find the two integers that lies between .

Estimate to the nearest tenth.

Try 5.2: 5.22 = 27.04 Too high, try 5.1.

Too low 5.12 = 26.01

Check On a calculator ≈ 5.1961524 ≈ 5.1 rounded to the nearest tenth.

< <

5 < < 6

Because 27 is closer to 25 than to 36, is close to 5 than to 6.

Because 27 is closer to 27.04 than 26.01, is closer to 5.2 than to 5.1.

Example 1: Estimating Square Roots

Square roots have special properties that help you simplify, multiply, and divide them

I WILL BE ABLE TO:

(1) ESTIMATE SQUARE ROOTS.

(2) SIMPLIFY, ADD, SUBTRACT, MULTIPLY, AND DIVIDE SQUARE ROOTS.

Today’s Learning Target:

I WILL BE ABLE TO:

(1) ESTIMATE SQUARE ROOTS.

(2) SIMPLIFY, ADD, SUBTRACT, MULTIPLY, AND DIVIDE SQUARE ROOTS.

Today’s Learning Target:

You Do

Homework

• Yes, You have homework. Refer to your homework sheet.

Exit Ticketname, period on sheet of paper

Exit Ticketname, period on sheet of paper

1. Find stim to the nearest tenth. t nearest tenth.

Simplify each expression.

2.

3.

4.

5.