1. Least Common Multiple
using the cake method

2. 2 6 8 3 4 LCM of 6 and 8 LCM: 2x3x4=24 x What is the smallest prime
number that goes
into both 6 and 8?
Now divide both
6 and 8 by the 2
LCM of 6 and 8 x 2 6 8
What is the smallest prime
number that goes into
both 3 and 4? 3 4
LCM:
2x3x4=24
Nothing? Then circle
outside “L”
and multiply the
numbers to
get LCM.

3. 2 8 12 2 4 6 2 3 LCM LCM: 2x2x2x3=24 x x prime # that goes into both
What’s the smallest
prime number that
goes into
8 and 12?
Is there another
prime # that
goes into both
4 and 6?
LCM x 2 8 12 x
How about
2 and 3? 2 4 6 2 3
No?
Circle the “L” and
multiply.
LCM:
2x2x2x3=24

4. pg. 166 practice #4,5,7

5. pg. 167 practice #5,6

6. Homework: Solve the following problems in your math journal:
Find the least common multiple of: 7 and 10 7 and 49 5 and and 18 8 and 28 6 and and 15 9 and 24

7. Exit Slip
There are 36 cans of green beans and 48 cans of corn. The display designer wants an equal number of each vegetable in each row. What is the greatest number of cans that can be in each row?
Shuttle A comes every 6 minutes and Shuttle B comes every 9 minutes. It both shuttles just came to the airport, in how many minutes will they both come again?