Warm up: Pre- Algebra Monday

Identify the temperature that is halfway between each pair of temperatures.

1.) 0 and 102.) -5 and 153.) 5 and – 154.) -8 and 85.) -10 and 7

Pre-Algebra

• Please have problem 1.3 on your desk and get started on your warm up.

• Discuss problem 1.3• Please have your spiral

notebooks on your desk.– 1.4 In the Chips: Using a Chip

Model• Get started on tonight’s

homework– ACE worksheet # 23 - 45

Week 2

Focus Question: How can you use a chip model to represent addition and subtraction?

Warm up: Pre-Algebra Tuesday

• Complete the chartStart With Rule End With Number

Sentence

3 Black Add 5 Red ? ?

1 Red and 2 Black

Subtract 3 Red

? ?

? Subtract 3 Black

4 Red ?

Welcome to Pre-Algebra1. Please write your

homework in your agenda and get started on your warm up.

2. Finish discussing Problem 1.4

3. Review for Quiz– Math Fever

4. Work on tonight’s assignment– ACE worksheet # 46 - 55

•Investigation 1 Quiz tomorrow

Welcome to Pre-Algebra 1. Please have your homework on your desk and quietly review for Quiz.

2. Correct last night’s homework with a red pen.– ACE worksheet # 46 - 55

3. Quiz Investigation 1– Turn in at the front of class and

pick up tonight’s homework

4. Work on Tonight’s Assignment– Mathematical Reflection

• Complete in your journal

Wednesday

•Grades updates•Quiz today

Warm up: Pre-Algebra THURSDAY

1. Order the numbers from least to greatesta) .b) 20.33, 2.505, 23.30, 23

2. Find all of the values of xa) x + 3 < 1b) x – 5 is greater than 0

3. Find the missing temperaturea) On Monday, the high temperature was 20

degrees C. The low temperature was -15 degrees C. What temperature is halfway between the high and the low?

25

9,9

5,

10

3,5

2

Welcome to Pre-Algebra

1. Please have your homework on your desk and get started on your warm up.– Mathematical Reflection

2. Return and go over Quiz– Investigation 1

3. Please get out your spiral notebooks– Investigation 2 Vocabulary

Thursday

Investigation 2 Vocabulary• Absolute value

– The absolute value of a number is the distance from 0 on a number line. It can be thought of as the value of a number when its sign is ignored.

• Additive identity– Zero is the additive identity for rational numbers. Adding zero to any

rational number results in a sum identical to the original rational number.

• Additive inverse– Two numbers, a and b, that satisfy the equation a + b = 0.

• Algorithm– A set of rules for performing a procedure. Mathematicians invent

algorithms that are useful in many kinds of situations.• Commutative property

– The order of addition or multiplication of two numbers does not change the result.

Warm up: Pre-Algebra FRIDAY

1. Find each sum without using a calculatora) 12 + 4b) -4.5 + 3.8c) -250 + -750d) -12 + 4e) .

6

1

3

2

Welcome to Pre-Algebra 1. Please have your spiral

notebook on your desk and get started on your warm up.

2. Please get out your spiral notebooks– 2.1 Extending Addition to

rational numbers

3. Work on tonight’s assignment– Problem 2.1 D-G

Friday•Grades updates