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Arithmetic

About Course

Arithmetic is a branch of mathematics that consists of the study of numbers, especially the properties of the traditional operations on them—addition, subtraction, multiplication and division. Learn the essentials of arithmetic for free—all of the core arithmetic skills you'll need for algebra and beyond. Full curriculum of exercises and videos. This is the property of khanacademy.org and is available for free on their website.

Topics for this course

249 Lessons

Addition and subtraction

Basic addition and subtraction
Basic addition
Basic subtraction
Addition and subtraction within 20
Adding 8 + 7
Subtracting 14 – 6
Strategies for adding and subtracting within 100
Adding 53+17 by making a group of 10
Adding by making a group of 10
Strategies for adding 2-digit numbers
Addition and subtraction with number lines
Addition within 100
Adding 2-digit numbers without regrouping 2
Adding with regrouping
Subtraction within 100
Subtracting 2-digit numbers without regrouping 1
Subtracting with regrouping (borrowing)
Multi-digit addition with regrouping
Using place value to add 3-digit numbers: part 2
Adding 3-digit numbers
Relate place value to standard algorithm for multi-digit addition
Adding multi-digit numbers: 48,029+233,930
Three digit addition word problems
Multi-digit subtraction with regrouping
Methods for subtracting 3-digit numbers
Relate place value to standard algorithm for multi-digit subtraction
Worked example: Subtracting 3-digit numbers (regrouping)
Worked example: Subtracting 3-digit numbers (regrouping twice)
Worked example: Subtracting 3-digit numbers (regrouping from 0)
Subtracting in your head (no regrouping)
Multi-digit subtraction: 389,002-76,151
Subtraction by breaking apart
Missing number for 3-digit subtraction within 1000
Three digit subtraction word problems

Multiplication and division

Negative numbers

Fractions

Decimals

About the instructors

4.33 (24 ratings)

56 Courses

296 students

Free

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