CHSPE Mathematics - Number Sense 3

Question 1

Simplify: (−4) × (−3) × 2

Accepted Answer

24

Answer

(−4) × (−3) = 12, and 12 × 2 = 24; two negatives multiply to a positive.

Question 2

A bag contains 5 red, 3 blue, and 2 green marbles. What is the probability of randomly selecting a blue marble?

Accepted Answer

3/10

Answer

There are 3 blue marbles out of 10 total, so the probability is 3/10.

Question 3

What is 2.5 × 10³ written in standard notation?

Accepted Answer

2,500

Answer

2.5 × 10³ = 2.5 × 1,000 = 2,500.

Question 4

Which set of numbers is ordered from greatest to least?

Accepted Answer

−1, −4, −7, −10

Answer

On a number line, −1 > −4 > −7 > −10 because numbers closer to zero are greater.

Question 5

A student earns $12.50 per hour. How much does she earn for working 6.5 hours?

Accepted Answer

$81.25

Answer

12.50 × 6.5 = $81.25.

CHSPE - California High School Proficiency Examination Practice Test