Number Properties

Question 1

Answer 1

Remember rules for absolute values.

D

Question 2

Answer 2

-12

Rewrite problem

Question 3

Answer 3

Product will be positive

Exponent rules…even exponents will always be positive, odd exponents can be negative.

Question 4

Answer 4

2/9 < 3/13 < 2/3 < 5/7

Cross multiple like fractions to identify larger vs smaller

Question 5

Answer 5

Yes.

Multiply and simplify to 6/6 = 1

Question 6

Answer 6

D

Simplify and plug numbers related to B

Question 7

Answer 7

2.82% increase

Use smart # 100

Question 8

Answer 8

1.28y

Use smart # 100 for y

Question 9

Answer 9

20

Part / Whole = % Part / 100

Question 10

Answer 10

A

Solve for exact #s, don’t estimate

Question 11

Answer 11

D

Translate the statement into an equation. Pick easy #s and then try to prove/disprove B.

Question 12

Answer 12

90,000

Heavy division shortcut to estimate

Question 13

Answer 13

{-3,-4}

Movethe decimal place to the right to simplify

Question 14

Answer 14

C

A number divided by a 10^-2 …move the decimal to the right

Question 15

Answer 15

49 / 20

1 / 125

Write over the appropriate power of 10

Question 16

Answer 16

100X / Y

Part / Whole = %Part / Whole