Q1 - PRE-ASSESSMENT QUARTER 7

Which of the following best describes a universal set?

• A set that contains no elements

• A set containing all possible elements under consideration

• A set that is a subset of another set

• A set with exactly one element

In a set notation, if set A = {2, 4, 6, 8} and set B = {1, 2, 3, 4}, what is A ∩ B?

• {1, 2, 3, 4, 6, 8}

• {2, 4}

• {1, 2, 3, 4, 2, 4, 6, 8}

• {1, 3}

In a survey of 100 students about their favorite subjects, 45 chose Math, 38 chose Science, and 15 chose both. How many students chose either Math or Science?

• 68 students

• 83 students

• 98 students

• 53 students

On a number line, what is the absolute value of -7 represented as?

• The distance of 7 units to the right of 0

• The distance of 7 units to the left of 0

• The distance of 7 units from 0 in either direction

• A negative number that is 7 units from 0

Which statement about absolute value is TRUE?

• The absolute value of a negative number is negative

• The absolute value of 0 is undefined

• The absolute value of a number is always positive or zero

• The absolute value of a positive number is negative

Which of the following represents the commutative property of addition for integers?

• a + (b + c) = (a + b) + c

• a + b = b + a

• a + 0 = a

• a + (-a) = 0

Convert the fraction 78 to a decimal:

• 0.875

• 0.778

• 0.857

• 0.750

What is the square root of 130 between which two consecutive integers?

• 11 and 12

• 10 and 11

• 12 and 13

• 13 and 14

Which number is irrational?

• 255

• 16

• 7

• -2.5

Estimate 68 to the nearest hundredth:

• 8.25

• 8.24

• 8.26

• 8.23