PSAT Math Basics Lesson 1: Definitions & Exponents

PSAT Math Basics Lesson 1:

Definitions & Exponents

Drill 1: Definitions

Make sure you know these words and watch out for them! They are easy to forget and skip over but make a difference in your score

Multiple Choice

numbers that a certain number can be divided by, leaving no remainders

• integers

• positive numbers

• negative numbers

• multiples

• factors

Multiple Choice

numbers that can be divided by a certain number with no remainders

• prime numbers

• integer

• factors

• multiples

• distinct

Multiple Choice

integers that can be divided by 2 evenly, with no remainders

• integers

• even numbers

• odd numbers

• factors

• multiples

Multiple Choice

numbers that have no fractional or decimal parts

• integers

• distinct

• prime numbers

• digit

Multiple Choice

numbers that are greater than zero

• even numbers

• odd numbers

• positive numbers

• negative numbers

• prime numbers

Multiple Choice

numbers that are less than zero

• odd numbers

• even numbers

• positive numbers

• negative numbers

• prime numbers

Multiple Choice

numbers that have exactly two distinct factors: themselves and 1

• odd numbers

• even numbers

• positive numbers

• negative numbers

• prime numbers

Multiple Choice

integers that cannot be divided evenly by 2

• distinct

• odd numbers

• even numbers

• factors

• multiples

Multiple Choice

Having a different value

• digit

• integer

• distinct

• factors

Multiple Choice

a figure from 0 through 9 that is used as a placeholder

• digit

• integer

• distinct

• multiples

Multiple Choice

Whole numbers left over after division

• sum

• product

• remainder

• quotient

Multiple Choice

a number's distance from zero; always a positive value

• consecutive numbers

• absolute value

• difference

• quotient

Multiple Choice

can be divided with no remainder

• sum

• quotient

• difference

• divisible

Multiple Choice

The result of multiplication

• sum

• difference

• product

• quotient

Multiple Choice

The result of subtraction

• sum

• difference

• product

• quotient

Multiple Choice

The result of addition

• sum

• difference

• product

• quotient

Multiple Choice

The result of division

• sum

• difference

• product

• quotient

Multiple Choice

numbers in a row

• prime numbers

• consecutive numbers

• absolute value

• remainder

Simplifying Exponents

shortcut: just remember MADSPM

MA means when you see the MULTIPLICATION sign, ADD the exponents

• y² x y³ = y²⁺³ = y⁵

DS means when you see the DIVISION sign, SUBTRACT the exponents

• y⁵/y² = y^5-2 = y³

PM means when you see the exponent raised to a POWER, MULTIPLY the exponents

• (y²)³ = y^2x3 = y⁶

• This is really easily confused with multiplication so watch out!

BE CAREFUL! These rules do not apply to the ADDITION or SUBTRACTION of exponents

• 2² +2³ = (2 x 2) + (2 x 2 x 2) = 12

• 2⁵ = (2 x 2 x 2 x 2 x 2) = 32

PRACTICE TIME!!!!

• no calculator

Open Ended

3³ x 3² =

Open Ended

3³/3² =

Open Ended

(3³)² =

Open Ended

y⁶ x y² =

Open Ended

y⁶/y² =

Open Ended

(y⁶)² =

Multiple Choice

If 3⁴ = 9^x, what is the value of x?

• 2

• 3

• 4

• 5

Multiple Choice

If (3^x)³ = 3¹⁵, what is the value of x?

• 3

• 5

• 7

• 9

Multiple Choice

If x^yx⁶ = x⁵⁴ and (x³)^z = x⁹, what is the value of y + z?

• 11

• 12

• 48

• 51

Multiple Choice

Which of the following is equivalent to the expression x⁶y^-3z^1/2 ?

• $\frac{x^6\sqrt{z}}{3y}$

• $\frac{x^6\sqrt{2z}}{y^3}$

• $\frac{6x\sqrt{z}}{y^3}$

• $\frac{x^6\sqrt{z}}{y^3}$