 Arithmetic

The most basic of the math playlists. Start here if you have very little background in math fundamentals (or just want to make sure you do). After watching this playlist, you should be ready for the pre-algebra playlist.

Begin Course
 University Khan Academy Professor Salman Khan Lectures 35 Lectures
 University Khan Academy Professor Salman Khan Lectures 35 Lectures
WATCH NEXT IN ARITHMETIC Lecture 1 Lecture 2 Lecture 3 Lecture 4 Lecture 5 Lecture 6

Basic Subtraction Lecture 7

Subtraction 2 Lecture 8

Subtraction 3; Introduction to Borrowing or Regrouping Lecture 9

Alternate mental subtraction method Lecture 10

Level 4 Subtraction Lecture 11

Why borrowing works Lecture 12 Lecture 13

Subtracting decimals Lecture 14

Basic Multiplication Lecture 15

Multiplication 2; The Multiplication Tables Lecture 16

Multiplication 3; 10,11,12 times tables Lecture 17

Multiplication 4; 2 Lecture 18

Multiplication 5; 2 Lecture 19

Multiplication 6; Multiple Digit Numbers Lecture 20

Multiplication 7; Old video giving more examples Lecture 21

Mulitplication 8; Multiplying decimals (Old video) Lecture 22

Lattice Multiplication Lecture 23

Why Lattice Multiplication Works Lecture 24

Division 1 Lecture 25

Division 2 Lecture 26

Division 3; More long division and remainder examples Lecture 27

Level 4 division Lecture 28

Converting fractions to decimals Lecture 29

Percent and decimals Lecture 30

Dividing decimal Lecture 31

Ordering numeric expressions Lecture 32

Greatest Common Divisor Lecture 33

Least Common Multiple Lecture 34

Equivalent fractions Lecture 35

Mixed numbers and improper fractions