LCM & Distributive Property!

LCM & Distributive Property!

​Least Common Multiple (LCM)

• ​To find the LCM you are looking for the smallest common skip number

• ​You typically look for the key words: same time

• ​Example: LCM of 8 and 5

• ​8: 8, 16, 24, 32, 40, 48

• ​5: 5, 10, 15, 20, 25, 30, 35, 40​

• ​LCM = 40

Multiple Choice

LCM stands for

• Least correct multiple
• Latest common multiple
• Least common multiple
• Laser classroom mouse

Multiple Choice

multiples for the number 3 include..

• 4,8,12,16,18,21
• 3,5,7,9,10,12
• 3,4,5,6,7,8
• 3,6,9,12,15,18

Multiple Choice

What is the LCM of 2 and 7?

• 14

• 7

• 2

• 1

Multiple Choice

What is the LCM of 4 and 6?

• 12

• 6

• 2

• 24

Multiple Choice

What is the LCM of 7 and 14?

• 14

• 7

• 2

• 28

Multiple Choice

The school cafeteria serves tacos every sixth day and cheeseburgers every eight day. If tacos and cheeseburgers are both on today’s menu, how many days will it be before they are both on the menu again?

• 14 days
• 24 days
• 34 days
• 44 days

​Distributive Property

• ​A multiplication fact can be broken apart into the sum or difference of two other multiplication facts.

• ​Example: 5 (3 + 4)

  • (5x3) + (5x4)

  • ​ 15 + 20

  • ​ 35

Multiple Choice

Find the missing factors:

6 x 18 = (6 x ___ ) + ( 6 x ___ )

• 7, 6

• 10, 4

• 9, 9

• 6, 2

Multiple Choice

8(3+5)=

• 11+13

• 83+85

• 40 + 32

• 24 + 40

Multiple Choice

8(9+2)=

• 91

• 88

• 74

• 50

Multiple Select

choose both correct answers

6(5+3)=

• 30+ 3

• 30+18

• 65-63

• 48

• 33

Multiple Choice

5(3+7)

• 22

• 60

• 50

• 40

Multiple Choice

Which of the following is equivalent to 5(2x + 3)?

• 52x + 53
• 7x + 10
• 10x + 15
• 10x + 3

Multiple Choice

Which is equivalent to 5(a + 6)?

• 5a + 6
• a + 30
• 5a + 30
• 5a - 30