Arithmetic and Pre-Algebra: Addition and Subtraction
16 video lessons available
Basic Addition
Introduction to addition. Multiple visual ways to represent addition
Source: Salman Khan - Khan Academy
All Lessons in This Course
1
Basic Addition
Introduction to addition. Multiple visual ways to represent addition
2
Addition 2
Adding 2-digit numbers
3
Basic Subtraction
Introduction to subtraction
4
Subtraction 2
Different ways to view subtraction
5
Level 2 Addition
Adding a 2 digit number to a 1 digit number. Introduction to carrying.
6
Addition 3
Practice carrying digits to add multiple digit numbers
7
Subtraction 3
Introduction to Borrowing or Regrouping
8
Why borrowing works
An explanation of why (not how) borrowing/regrouping works when subtracting numbers
9
Addition 4
More practice carrying with multiple digit numbers
10
Level 4 Subtraction
Subtraction of multi-digit numbers involving borrowing
11
Subtraction Word Problem
12
Alternate mental subtraction method
How I subtract in my head
13
Negative Numbers Introduction
14
Adding Negative Numbers
15
Adding integers with different signs
16
Adding/Subtracting negative numbers
Adding/Subtracting negative numbers
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