CFA #6 Review

What is the importance of understanding integers in mathematics?

• They are only used in basic arithmetic operations.

• They are crucial as they form the basis for arithmetic operations and are used in various mathematical concepts.

• They are not important in advanced mathematics.

• They are only relevant in computer programming.

What is the significance of the number zero in rational numbers?

• Zero is a rational number that represents the absence of quantity and serves as the neutral element in addition.

• Zero is an irrational number that cannot be expressed as a fraction.

• Zero is a positive number that indicates a quantity of nothing.

• Zero is a whole number that is used to represent the maximum value in a set.

Order the following rational numbers from greatest to least: -0.45, -1/3, 4/5, 0.25, -1/2.

• 4/5, 0.25, -1/3, -0.45, -1/2

• 0.25, 4/5, -1/3, -0.45, -1/2

• -1/3, 0.25, 4/5, -0.45, -1/2

• -1/2, -0.45, -1/3, 0.25, 4/5

If the temperature drops from 7°F to -9°F, by how many degrees did the temperature drop?

• 10 degrees

• 12 degrees

• 16 degrees

• 20 degrees

How do you find the sum of integers?

• Multiply the integers together, ignoring their signs.

• Add the values together, taking into account their signs.

• Subtract the smaller integer from the larger one.

• Divide the integers and round to the nearest whole number.

What is the definition of absolute value?

• The absolute value of a number is its distance from zero on the number line, regardless of direction.

• The absolute value of a number is the number itself if it is positive, and its opposite if it is negative.

• The absolute value of a number is the square of the number.

• The absolute value of a number is the maximum value it can take in a given set.

What is the sum of the following numbers: -10, 7, 4, -2?

• -1

• 0

• 1

• -2

What is the relationship between positive and negative numbers?

• Positive numbers are greater than zero, while negative numbers are less than zero; they are opposites on the number line.

• Positive numbers are less than zero, while negative numbers are greater than zero; they are the same on the number line.

• Positive numbers can be negative, while negative numbers can be positive; they are interchangeable on the number line.

• Positive numbers are equal to zero, while negative numbers are not defined on the number line.

Define rational numbers.

• Numbers that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

• Numbers that cannot be expressed as a fraction.

• Whole numbers and their negatives.

• Numbers that are only positive integers.

What is the absolute value of |-26|?

• -26

• 0

• 26

• -1