SAT Math Must-Know Vocabulary
Help!
|
|
||||
|---|---|---|---|---|---|
| integers | Integers are numbers without a fractional part (and that is why
they are often called the whole numbers). Integers include 1,
2, 3, . . . (the counting numbers) along with 0, −1, −2, −3, . . .
🗑
|
||||
| remainder | When an integer is divided by another, the remainder is the
integer amount that is left over. For example, when 66 is
divided by 7, the remainder is 3, since 7 goes into 66 a total of
9 times, with 3 left over: 66 = 7 × 9 + 3.
🗑
|
||||
| even integers | Even integers can be divided by two without a remainder. The
even integers include 0, 2, 4, 6, 8, 10, 12, . . . , 2753, . . . along
with −2, −4, −6, . . . , −37954, . . .
🗑
|
||||
| odd integers | Odd integers can not be divided by two without a remainder.
The odd integers include 1, 3, 5, 7, 9, 11, . . . , 2452 + 1, . . .
along with −1, −3, −5, . . . , −37955, . . .
🗑
|
||||
| positive, negative | A positive number is greater than zero, and a negative number
is less than zero. Zero itself is neither positive nor negative.
Note that a negative number raised to an even power is posi-
tive, and when raised to an odd power is negative.
🗑
|
||||
| multiple | A multiple of a number is the result of multiplying that number
by any integer. For example, the multiples of 15 include 15,
30, 45, 60, . . . but also 0, −15, −30, . . .
🗑
|
||||
| factor | A factor of a number is any integer that can divide that number
without a remainder. For example, the factors of 12 are 1, 2,
3, 4, 6, and 12; the factors of 29 are just 1 and 29.
🗑
|
||||
| prime | A prime number is a positive integer that has only two factors:
itself and 1. The prime numbers include 2, 3, 5, 7, 11, . . .
The prime factors of a number are the factors of the number
that also are prime.
🗑
|
||||
| average (arithmetic mean) | The average of
a group of numbers is the sum of the numbers divided by the
number of numbers.
🗑
|
||||
| median | The median of a group of numbers is the number in the middle
of the group after the group has been numerically sorted.
🗑
|
||||
| mode | The mode of a group of numbers is the number or numbers
which appear most often
🗑
|
||||
| in terms of | You are often asked on the SAT to solve for some variable
“in terms of” another variable or variables.
🗑
|
||||
| less, fewer | A common SAT question type involves translating from words
into an algebraic equation that you can solve.
🗑
|
||||
| rational | A rational number is any number that can be written as a
fraction: a ratio of two integers. Rational numbers include
1/2, 3/4, 5 (since 5 = 5/1), 22/7, 1/3, and so on.
🗑
|
||||
| Important rational numbers to know from memory as decimals | 1/2 = 0.5, 1/3 = 0.33, 1/4 = 0.25, 1/5 = 0.2, 2/3 = 0.66,
and 3/4 = 0.75.
🗑
|
||||
| real | The real numbers are all the numbers on the number line,
including the integers, the rational numbers, and everything
else
🗑
|
||||
| domain | The domain of a function is all of the possible values that can
be used as input to the function, so that the function returns
a real value. If the function is written as y = f(x), the domain
is all possible values of x such that y is a real number.
🗑
|
||||
| range | The range of a function is all of the possible values that can be
generated (output) by the function. If the function is written
as y = f(x), then the domain is all possible values of y.
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
chess
Popular SAT sets