Definitions
A whole number
what is a non negative integer including zero and all positive counting numbers that contains no fraction or decimals
Solve: x+7=15
8
What is 5+3x2?
11
What is 1/2 as a decimal?
0.5
What is 2^3?
8
What's an integer
A whole number that can be positive, negative or zero with no fractional or decimal part
Solve: 3x=21
7
What is 18 divided by 3+4?
10
What is 25% of 80?
20
What is 5^2?
25
What's a rational number
A rational number is any number that can be written as a simple fraction \(\frac{p}{q}\), where \(p\) and \(q\) are both integers (whole numbers, their negative opposites, and zero), and the bottom number \(q\) is not equal to zero. [1]
Solve: 2x+5=17
6
What is 2^3+4x3?
20
Simplify:12/18
2/3
What is the square root of 144?
12
What's an irrational number
An irrational number is a real number that cannot be written as a simple fraction (pq) of two integers, where p and q are whole numbers and q is not zero.
Simplify:4(2x+3)-5x
3x+12
What is 30-2(5+3)?
14
What is 0.75x40?
30
Simplify: 3^2+2^3
17
What's a variable
A variable in mathematics is a symbol—most often a letter like \(x\), \(y\), or \(n\)—that stands for an unknown number or a value that can change.
Solve: 5(x-2)=3x+8
9
What is 48\div(2x3)+4^2?
24
A shirt costs $60 and is 20% off. What is the sale price?
$48
Simplify: 2^3x3^2-10
62