Unit 2 Review

Which teams' points are prime and which are composite?

• Prime: Mavericks and Grizzlies

  Composite: Lakers and Warriors

• Prime: Mavericks and Warriors

  Composite: Lakers and Grizzlies

• Prime: Mavericks and Lakers

  Composite: Grizzlies and Warriors

Which statement about the model is true?

• 1. All the models represent prime numbers.

• All the models represent composite numbers.

• Model A & Model B only represent composite numbers.

• Model C & Model D only represent prime numbers.

At Tyler High School there are a total of 986 students.

*219 of the students are Freshmans

*285 of the students are Sophomores

*207 of the students are Juniors

Which equation could be used to determine s, the number of students that are Seniors?

• 219 + (285 + 207) = s

• s - 986 = 285 + 207

• 986 + s = 219 + 285

• 986 - (219 + 285 + 207) = s

Tanya went to the mall to spend her birthday money. She bought a purse for $45. She bought two shirts that cost $26 each. 

Tanya wrote an equation to represent m, the amount of money she had left after shopping at the mail.

m = 100 - [45 + (2 x 26)]

If Tanya had $90, how much money did she have left after buying her purse and shirts?

An expression is shown below.

   54 [20 - 15 (9 - 5)] + 12

Which statement is true about the expression?

• 54 X 20 should be solved first.

• 4 + 12 should be solved first.

• 9 - 5 should be solved first.

• 20 - 15 should be solved first.

An expression is shown below.

                         

                                         6 [32 - 8(3 + 4)] 

Which statement best describes the relationship between the digit 8 and the parentheses in the expression?

• 8 less than 32 times the sum of 3 and 4

• 8 times 3 then add 4

• 8 less than 32

• 8 times the sum of 3 and 4

Simplify the expression below.

    83 + [51 - (9 + 5) x 3] ÷ 3

• 86

• 97

• 51

• 180

Shelby made treats for her dog Reba.

*She made a total of 3 dozen treats.

*12 of the treats are dog bones.

*8 of the treats are cookies.

*The remainder of the treats are an equal number of chicken and beef treats.

This expression can be used to determine the number of chicken treats Shelby made.

                 [3 x 12 - (12 + 8) ÷ 2

How many chicken treats did Shelby make?

An expression is shown.

                        17 - [14 + (5 + 3) - 6] x 2

Which of these represents this expression after a possible first step in the simplification process?

• 17 - [14 + (8) - 6] x 2

• 17 - [16] x 2

• 17 - 22 -2 x 2

• 17 - 22

Simplify the expression below.

  45 + [ 39 x 5 - (8 x 6) ] ÷ 3

• 90

• 64

• 94

• 30