Pre-Algebra

Lesson 2.15

Addition & Subtraction Applications

http://www.youtube.com/watch?v=Aay0fAXSOsM

Word problems

Why do we need to practice word problems?

32/$4 = 16/$2.75

x/2 = 6

In a perfect place...

Which is a better value? A 32 oz. bag for $4 or a 16 oz bag for $2.75?

If 2 bags costs $6, how much does 1 bag cost?

In real life...

Write and simplify a numerical expression.Subtract 12.5 from -3.8

Write an equation to represent this sentence.When 4 is added to a number,

the result is 11.5

What Ms. Vallejo Does...

1. Draw/Write

2. Form

3. Solve

4. Check

SMOTD

1. Draw/Write

2. Form

3. Solve

4. Check

1. Draw/Write

2. Form

3. Solve

4. Check

1. Draw/Write

2. Form

3. Solve

4. Check