## Course: ArithmeticDnatube

#### Lec 3 - Level 2 Addition

Level 2 Addition Adding a 2 digit number to a 1 digit number. Introduction to carrying.

#### Lec 5 - Addition 4

Addition 4 More practice carrying with multiple digit numbers

#### Lec 6 - Basic Subtraction

Basic Subtraction Introduction to subtraction

#### Lec 7 - Subtraction 2

Subtraction 2 Different ways to view subtraction

#### Lec 8 - Subtraction 3: Introduction to ...

Subtraction 3: Introduction to Borrowing or Regrouping Introduction to borrowing and regrouping

#### Lec 9 - Alternate mental subtraction method

Alternate mental subtraction method How I subtract in my head

#### Lec 10 - Why borrowing works

An explanation of why (not how) borrowing/regrouping works when subtracting numbers.

#### Lec 11 - Level 4 Subtraction

Level 4 Subtraction Subtraction of multi-digit numbers involving borrowing

#### Lec 12 - Why borrowing works

Why borrowing works An explanation of why (not how) borrowing/regrouping works when subtracting numbers

#### Lec 14 - Subtracting decimals (old)

Subtracting decimals (old) Subtracting decimal numbers

#### Lec 15 - Basic Multiplication

Basic Multiplication Introduction to multiplication

#### Lec 16 - Multiplication 2: The Multiplic ...

Multiplication 2: The Multiplication Tables Introduction to the multiplication tables from 2-9.

#### Lec 17 - Multiplication 3: 10,11,12 time ...

Multiplication 3: 10,11,12 times tables Multiplication 3: Learning to multiply 10, 11, and 12.

#### Lec 18 - Multiplication 4: 2-digit times ...

Multiplication 4: 2-digit times 1-digit number Multiplying a 2-digit times a 1-digit number

#### Lec 19 - Multiplication 5: 2-digit time ...

Multiplication 5: 2-digit times a 2-digit number Multiplying a 2-digit number times a 2-digit number

#### Lec 20 - Multiplication 6: Multiple Digi ...

Multiplication 6: Multiple Digit Numbers Working our way up to multiplying multiple-digit numbers with each other

#### Lec 21 - Multiplication 7: Old video giv ...

Multiplication 7: Old video giving more examples 2 examples of multiplying a 3 digit number times a 2 digit number. 1 example of multiplying a 3 digit number times a 3 digit number.

#### Lec 22 - Mulitplication 8: Multiplying d ...

Mulitplication 8: Multiplying decimals (Old video) Multiplying decimals (www.khanacademy.org)

#### Lec 23 - Lattice Multiplication

Lattice Multiplication Introduction to lattice multiplication

#### Lec 24 - Why Lattice Multiplication Works

Why Lattice Multiplication Works Understanding why lattice multiplication works

#### Lec 25 - Division 1

Division 1 Introduction to division

#### Lec 26 - Division 2

Division 2 Dividing into larger numbers. Introduction to long division and remainders.

#### Lec 27 - Division 3: More long division ...

Division 3: More long division and remainder examples More long division and remainder examples

#### Lec 28 - Level 4 division

Level 4 division Dividing a two digit number into a larger number

#### Lec 29 - Converting fractions to decimals

Converting fractions to decimals How to express a fraction as a decimal

#### Lec 30 - Percent and decimals

Percent and decimals Expressing percentages as decimals. Expressing decimals as percentages.

#### Lec 31 - Dividing decimal

Dividing decimal Dividing decimal numbers

#### Lec 32 - Ordering Numeric Expressions

Ordering Numeric Expressions Converting percentages and fractions to decimals to order numbers

#### Lec 33 - Greatest Common Divisor

Greatest Common Divisor 4 example problems of determining the greatest common factor of two numbers by factoring the 2 numbers first

#### Lec 34 - Least Common Multiple

Least Common Multiple Example of figuring out the least common multiple of two nunmbers

#### Lec 35 - Equivalent fractions

Equivalent fractions Introduces the concept of equivalent fractions

#### Lec 36 - Mixed numbers and improper frac ...

Mixed numbers and improper fractions Converting mixed numbers to improper fractions and improper fractions to mixed numbers

#### Lec 37 - Time Differences 1

Time Differences 1 Finding how long passes between two times

#### Lec 38 - Time Differences in Different T ...

Time Differences in Different Time Zones Calculating flight times across time zones

#### Lec 39 - Prime Numbers

Prime Numbers Identifying prime numbers

#### Lec 40 - Partial Quotient Division

Partial Quotient Division An alternate to traditional long division

#### Lec 41 - Partial Quotient Method of Divi ...

Partial Quotient Method of Division 2 Another example of doing long division using the partial quotient method

#### Arithmetic

Source of these courses is khan
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.
khan  Website: http://www.dnatube.com/school/khan

#### khan

Videos are obtained from khan
COURSE NAME: Arithmetic