If you're seeing this message, it means we're having trouble loading external resources for Khan Academy.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Math

6th grade (U.S.)

By the 6th grade, you're starting to become a sophisticated mathemagician. You'll be able to add, subtract, multiply, and divide any non-negative numbers (including decimals and fractions) that any grumpy ogre throws at you. Mind-blowing ideas like exponents (you saw these briefly in the 5th grade), ratios, percents, negative numbers, and variable expressions will start being in your comfort zone. Most importantly, the algebraic side of mathematics is a whole new kind of fun! And if that is not enough, we are going to continue with our understanding of ideas like the coordinate plane (from 5th grade) and area while beginning to derive meaning from data! (Content was selected for this grade level based on a typical curriculum in the United States.)
Community Questions
A thumbnail for: Ratios, rates, and percentages
32 8

Ratios, rates, and percentages
A thumbnail for: Arithmetic operations
24 16

Arithmetic operations
A thumbnail for: Negative numbers
10 10

Negative numbers
A thumbnail for: Properties of numbers
15 3

Properties of numbers
A thumbnail for: Geometry
21 14

Geometry
A thumbnail for: Variables and expressions
43 18

Variables and expressions
A thumbnail for: Data and statistics
14 9

Data and statistics
Properties of numbers

Least common multiple

Life is good, but it can always get better. Just imagine being able to find the smallest number that is a multiple of two other numbers! Other than making your life more fulfilling, it will allow you to do incredible things like adding fractions. Common Core Standard: 6.NS.B.4

Greatest common factor

You know how to find factors of a number. But what about factors that are common to two numbers? Even better, imagine the largest factors that are common to two numbers. I know. Too exciting! Common Core Standard: 6.NS.B.4

Distributive property

You've already seen the distributive property in action multiple times. Now we'll use it again!

Order of operations

Mathematics wouldn't be so useful if, interpreted in different ways, the same expression could be viewed to represent different values. To combat this issue, the mathematical community defined "orders of operations" to remove an ambiguity there might be when evaluating an expression!