Lesson 1 GCF LCM.notebook September 09, 2013

Warm Up: Complete this in your spiral notebook

When this is complete, finish coloring your phones!

Homework

Lesson 1 GCF LCM.notebook September 09, 2013

Cell Phones

Speed Dial1 __________2 __________3 __________4 __________5 __________6 __________7 __________8 __________9 __________0 __________

GoDawgs!Mrs. 

Reynolds

Front Back

Lesson 1 GCF LCM.notebook September 09, 2013

Lesson 1 GCF LCM.notebook September 09, 2013

Lesson 1 GCF LCM.notebook September 09, 2013

10 15 20

List the factor pairs by starting with 1x the number, 2x?, 3x? (GO IN ORDER!)

Lesson 1 GCF LCM.notebook September 09, 2013

Use the 'list' method

Use the 'factortree' method

Use either method

Lesson 1 GCF LCM.notebook September 09, 2013

M4 5

Hint: If you list the largest #s multiples first, you might find the LCM faster :)

Lesson 1 GCF LCM.notebook September 09, 2013

Hint: If you list the largest #s multiples first, you might find the LCM faster :)

Lesson 1 GCF LCM.notebook September 09, 2013

Hint: If you list the largest #s multiples first, you might find the LCM faster :)

Hint: If you multiply the 2 numbers, it will tell you a multiple. Sometimes that # will be the LCM

Hint: If you list the largest #s multiples first, you might find the LCM faster :)

List the factor pairs by starting with 1x the number, 2x?, 3x? (GO IN ORDER!)

Lesson 1 GCF LCM.notebook September 09, 2013

Warm Up (Use your notes from yesterday, if needed)1. Find the GCF of 21 and 35 using the list method. 

2. Find the GCF of  24 and 40 using prime factorization (tree method). 

3. Find the LCM of 9 and 15 (use the M organizer to help you)

Lesson 1 GCF LCM.notebook September 09, 2013

Check HW

1. 7 teams of 2 leaders and 11 scouts

2. 65 campers did not ride the bus.

3. June 4

4. 2 cm

There can only be 1 type of flower in each row. 

GCF or LCM?

Lesson 1 GCF LCM.notebook September 09, 2013

Speed Dial 9

Lesson 1 GCF LCM.notebook September 09, 2013