Quiz - Order of Operations, Prime, Composite, Factor Trees

Which set of numbers are PRIME?

• 1, 2, 3, 4, 5

• 2, 4, 6, 8

• 3, 5, 7, 9

• 3, 5, 11, 13

How many factors does the number 12 have?

• 5

• 6

• 2

• 3

Which set of numbers are COMPOSITE?

• 4, 8, 10

• 2, 10, 20

• 0, 1, 2

• 17, 18, 20

Which list shows all of the factors of 20?

• 1, 2, 5, 20

• 2, 10

• 1, 2, 4, 5, 10, 20

• 2, 4, 5, 10

Which is the correct prime factorization for the number 40?

• 2 x 4 x 5

• 2 x 2 x 2 x 5

• 4 x 10

• 2 x 2 x 5

 $20+100\div5$  

Solve using the order of operations.

• 40

• 24

• 100

• 104

 $9\times10-(30+30)$  

Solve using the order of operations.

• 60

• 270

• 30

• 150

 $10\ +\ 20\ -\ 12\ \div\ 2\ \times\ 3$ 
 What would be the first step to solve?

•  $10+20$  

•  $20\ -\ 12$  

•  $12\ \div\ 2$  

•  $2\times3$  

 $6\ \times2+8\div4\ =15$  

Where should a pair of brackets be inserted to make this statement true?

•  $\left(6\ \times2\right)+8\div4\ =15$  

•  $6\ \times\left(2+8\right)\div4\ =15$  

•  $6\ \times2+\left(8\div4\right)\ =15$  

•  $\left(6\ \times2+8\div4\right)\ =15$  

What is a composite number?

• a number with ONLY TWO factors

• a number with LESS THAN TWO factors

• a number with MORE THAN TWO factors

• a number with ONLY ONE factor