Foundations Quiz 1

Sets

100

1

N, W, Z, Q, R

200

sqrt(9)

N, W, Z, Q R

300

- 24/6

Z, Q, R

400

pi

I, R

500

sqrt(1/4)

Q, R

Properties

100

(10-3x+24^2) * 0 = 0

Zero Property

200

2m+8=8+2m

Commutative

300

4*(3y)=(4*3)y

Associative

400

20(1/20)=1

Inverse

500

(3x+5)+10 = (5+3x)+10

Commutative

Closure

100

Are Integers closed under multiplication?

True

200

Odd numbers closed under multiplication.

True

300

Whole Numbers closed under subtraction

False: 

2-3

400

Irrational numbers closed under division.

False: 

pi/pi

500

All real numbers 1 through 9 closed through division

False: 

1/2 = .5

Order of Operations

100

10-2*4

2

200

(3)^2+25/5 -10

4

300

[(-4+5) *5-2]-abs(-2)

1

400

(20-2^2 +8)/(3(10-5)-3) *5^2

50

500

(-2^2 -1)/(3(1-3)*5) *2^2-2(-2+1)

6

Evaluating Expressions

100

x+y+z, x=3, y=-4, z=1

0

200

2x^2-3x, x=2

2

300

abs(x-5b), x=10, b=4

10

400

(7c^2+5)/(4a-b), a=1, b=-5, c=-4

13

500

(5a^2-b^2+c^3)/(b+a)+abc, a=2, b=3, c=-1

-1