MCAS MCAS Mathematics 3

Question 1

Which number is irrational?

Accepted Answer

√2

Answer

√2 is irrational because it cannot be expressed as a fraction and its decimal never repeats or terminates.

Question 2

What is the least common multiple (LCM) of 4 and 6?

Accepted Answer

12

Answer

The LCM of 4 and 6 is 12 because 12 is the smallest number divisible by both 4 and 6.

Question 3

If y = 2x − 1, what is y when x = 4?

Accepted Answer

7

Answer

Substituting x = 4: y = 2(4) − 1 = 8 − 1 = 7.

Question 4

A store sells apples for $0.75 each. How much do 8 apples cost?

Accepted Answer

$6.00

Answer

8 × $0.75 = $6.00.

Question 5

What type of angle measures exactly 90°?

Accepted Answer

Right

Answer

A right angle measures exactly 90° and is often marked with a small square symbol.

MCAS - Massachusetts Comprehensive Assessment System Test Practice Test