Unit 1 Exam

Keywords

100

What are the four operations?

Addition, Subtraction, Multiplication, and Division

200

What is the math vocab word that represents a letter?

Variable 

300

The big number in front of a letter is called?

Coefficient! 

400

What does the M in PEMDAS stand for?

Multiplication 

500

What is the difference between an expression and equation?

Expression , no equal sign 

Equation, equal sign

Place Value

100

What place value does the 9 hold 

190

Tens

200

What place value does the  5 hold?

540

Hundreds 

300

What place value does 1 hold?

1,650

Thousands

400

What place value does 2 hold

21,987

Ten thousands

500

What place value does the number 9 hold?

9 

Ones 

Expanded forms

100

I have 5 tens and two ones, what number do I have?

52

200

I have seven tens and eight ones, what number do I have?

78

300

This is standard form, true or false

281

True

400

What would be the standard from of this number: 

800 + 90 + 7 

897

500

Come up to the white board and expand the number 

679

600 + 70 + 9

Combine Like Terms

100

Are X and Y like terms?

No

200

Combine the like terms, and state the answer. 

8x + 4x 

12x 

300

Solve:

3x + 4y + 3x

6x + 4y

400

Solve 

7x + 8x - 1x + 6y + 2y

14x + 8y 

500

Solve

3x^{3 +} 2x² + 8 + 1x³

4x³ + 2x² + 8

PEMDAS

100

What goes first when doing PEMDAS?

Parenthesis

200

What goes first 

3+ 8 (9-1) + 6

(9-1)

300

What goes second?

 (8+9) + 10 + 8²

8²

400

According to PEMDAS rules if subtraction is before addition, we do subtraction first. 

True or False

True 

500

What does each letter in PEMDAS stand for in order ?

Parenthesis 

Exponent 

Multiplication / Division

Addition / Subtraction