Math 7 Chp 1-2.3 Test Practice

Chp 1.1 Order of Operations

100

Simplify the expression 8-14 div (9-2) 

8-14 div (9-2)

8 - (14div7)

8-2

6

200

Simplify 15 - 36 div 3^2 

15 - 36 div 3^2

15 - (36div9)

15-4 = 11

300

Simplify 2(4+2)^2 - 2 

2(4+2)^2 - 2

2(4+2)^2 - 2

2(36) - 2

72 - 2 = 70

400

Write this as repeated multiplication then solve

(2)^5

(2)(2)(2)(2)(2)

4

32

500

What is the value of the expression 15-14 ÷ 2 + 5?

13

This is a PEMDAS problem.  Use parenthesis and subtraction is adding a negative to help you see that you have to divide -14 by 2 first

15 + (-14/2) + 5 = 15 - 7 + 5

Then use subtraction is adding a negative so you can move terms around if they are all addition

15 + (-7) + 5 = 15 + 5 + (-7) = 20 - 7 = 13

Chp 1.2 Prop. of Numbers

100

Which property is this:   2*3 = 3 *2 

Commutative

200

Which property is this:   n * 1 = n 

Identity property of multiplication

any number times 1 is still that number; it's identity doesn't change

300

Write a(b+c) in expanded form.  BONUS:  What's the name of this property?

ab + ac 

The distributive property

400

Use your super powers of the associative and commutative problem to simply this without adding everything up:  5 + 6 + 7 + 8 + 9 + 10 + 15 + 14 + 13 + 12 + 11 + 10

5 + 6 + 7 + 8 + 9 + 10 + 15 + 14 + 13 + 12 + 11 + 10  

(5+15) + (6 +14) + (7 +13) + (8 +12) + (9+11) + (10 +10) = 6 pairs of 20

6(20) = 120

500

Which expression is equivalent to 3(11 +7)? the simplify it

A) 3(11) + 7    B) 11 + 21  C) 3(11) + 3(7)  D) 33 + 7

C) 3(11) + 3(7)

33 + 21 = 54

1.3 Variables 1.4 Words to Math

100

Evaluate the expression for the given value of the variable (plug in the number)

7(n + 3)  if n = 5

7(n + 3)  if n = 5

7(5+3) = 7(8)

56

200

Simplify   2y + 5y^2 - 2y^2 

2y + 5y^2 - 2y^2

2y + 3y^2

300

Write as an algebraic expression:  The quotient of a number and 4

The quotient of a number and 4

n/4

400

Write as an algebraic expression:  5 plus the product of a number and 7

 5 plus the product of a number and 7

5 + (n*7)

5 +7n

500

Combine like terms

5y + 10x + 2y - 3x^2 

5y + 10x + 2y - 3x^2 

7y + 10x -3x^2

1.5 Simplifying Alg. Exp & 2.1

100

Write variable expression represents the number of inches in y yards? (page 162 #1)

A) 36y  or B) y/36  or   C) 36-7

a) 36y

200

Which terms of the expression 4x + 9 + 9x - 4 are like terms?

4x and 9x

300

 abs(-6) =  And what does absolute value mean?

Absolute value means distance from zero.  

400

Which number is actually smaller?

-6 or -10?

-10 is less than - 6.  It is further to the left of 0 on the number line.

500

What number is opposite or the additive inverse of 12?

-12

Chp 2.2-2.3 Adding and Subtracting + -

100

Simplify -13 + -2 

-13 + -2 

-15

200

Simplify 13 + (-2) 

13 + (-2) = 11

300

During January, the average high temperature in Montreal, Canada is -6 degrees C and the average low temperature is -15 degrees C.  How much greater is the average high temperature than the average low temperature?

|-15| - |-6| = 15 - 6 = 9

400

Simplify - 5 -9

 - 5 -9

-5 + (-9) = -14

500

Simplify  6 +(-5) - 3 

Keep Change Change (Subtraction is adding the opposite)

Simplify  6 +(-5) - 3 work left to right

1-3

1+ (-3) = -2