prime, composite, and order of operations

How do you tell if a number is prime or composite?

• it has 3 factors

• it has 2 factors

• it is even

• it is odd

Tags

CCSS.4.OA.B.4

what are the factors of prime numbers?

• 2 and 3

• 1 and itself

• 1 and 2

• every prime number has different factors

Tags

CCSS.4.OA.B.4

Choose the prime number

• 4

• 15

• 21

• 11

Tags

CCSS.4.OA.B.4

Which is true?

• all even numbers are prime, like 2

• all odd numbers are prime

• all even numbers are composite, except 2

Tags

CCSS.4.OA.B.4

Which is a composite number?

• 15

• 5

• 2

• 23

Tags

CCSS.4.OA.B.4

What does GEMA stand for?

• Grouping, Even Numbers, Multiply and Divide, Add or Subtract

• Grouping, Exponents, Multiply THEN Divide, Add THEN Subtract

• Grouping, Eliminate Wrong Answers, Magnify choices, Answer

• Grouping, Exponents, Multiply or Divide, Add or Subtract

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

What do I do first in the problem 45 - 18 ÷ 9 x 3

• 45 - 18

• 18 ÷ 9

• 9 x 3

• 45 - 9

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

What should be done first to solve this problem?

72 - (12 + 3 x 3)

• 72 - 12

• 12 + 3

• 3 x 3

• 12 x 3

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

Solve for the answer 72 - (12 + 3 x 3)

• 51

• 27

• 189

• 52

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

Which is a composite number?

• 3

• 13

• 21

• 7

Tags

CCSS.4.OA.B.4