Number Theory Review

True or False...
40,500 is divisible by 6

• True
• False

Tags

CCSS.4.OA.B.4

The divisibility rule for 9 is...

• Divide the whole thing by nine
• Add the digits together.  If the sum is divisible by 9, the original number is divisible by 9
• Multiply the digits together by 9
• Add the digits together and then add 9.

Tags

CCSS.3.OA.D.9

Is 36,928 divisible by 4?

• Yes
• No

Tags

CCSS.4.OA.B.4

Is 53,559 divisible by 5?

• Yes
• No

Tags

CCSS.4.OA.B.4

105 is NOT divisible by which number?

• 1
• 2
• 3
• 5

Tags

CCSS.4.OA.B.4

As long as a number is even it can be divided by 2. 

• True 
• False 
• #IDK #IDC
• You better care! 

Tags

CCSS.2.OA.C.3

Is 5 prime or composite? 

• Prime
• Composite

Tags

CCSS.4.OA.B.4

A prime number

• has one factor
• has more than 2 factors
• has 100 factors
• has exactly 2 factors: 1 and the number

Tags

CCSS.4.OA.B.4

A composite number

• has more than 2 factors
• has one factor
• has at least 10 factors
• is always a really big number

Tags

CCSS.4.OA.B.4

One is 

• prime
• composite
• not prime or composite
• the loneliest number that you'll ever do

Tags

CCSS.4.OA.B.4