Algebra basics
Foundations videos
Explore algebra basics by building skills in expressions, equations, graphing, and geometry, preparing for advanced concepts like exponents and quadratics.
200+ videos and assessments
Standards aligned
Vetted by experts
Negative numbers
VIDEOS
Number opposites
Khan Academy
•3th - 6th Grade
•10 Qs
Adding numbers with different signs
Khan Academy
•6th - 6th Grade
•5 Qs
Adding & subtracting negative numbers
Khan Academy
•6th - 10th Grade
•10 Qs
Multiplying positive & negative numbers
Khan Academy
•6th - 10th Grade
•10 Qs
Subtracting a negative = adding a positive
Khan Academy
•6th - 10th Grade
•6 Qs
Why a negative times a negative makes sense
Khan Academy
•7th - 12th Grade
•10 Qs
Why a negative times a negative is a positive
Khan Academy
•7th - 12th Grade
•10 Qs
Dividing positive and negative numbers
Khan Academy
•5th - 8th Grade
•10 Qs
Absolute value
VIDEOS
Exponents
VIDEOS
Intro to exponents
Khan Academy
•6th - 10th Grade
•10 Qs
Exponent example 1
Khan Academy
•6th - 10th Grade
•5 Qs
Exponent example 2
Khan Academy
•6th - 10th Grade
•7 Qs
The 0 & 1st power
Khan Academy
•6th - 10th Grade
•10 Qs
Powers of zero
Khan Academy
•6th - 10th Grade
•10 Qs
Exponents of decimals
Khan Academy
•5th - 8th Grade
•10 Qs
Comparing exponent expressions
Khan Academy
•5th - 8th Grade
•10 Qs
1 and -1 to different powers
Khan Academy
•6th - 10th Grade
•10 Qs
Evaluating exponent expressions with variables
Khan Academy
•6th - 8th Grade
•10 Qs
Square roots
VIDEOS
Simplifying square roots of fractions
Khan Academy
•6th - 10th Grade
•10 Qs
Simplifying square roots
Khan Academy
•6th - 10th Grade
•10 Qs
Simplifying square roots (variables)
Khan Academy
•7th - 10th Grade
•10 Qs
Simplifying square-root expressions: no variables
Khan Academy
•8th - 10th Grade
•10 Qs
Intro to square roots
Khan Academy
•6th - 10th Grade
•10 Qs
Order of operations
VIDEOS
Fractions
VIDEOS
Decimals, fractions and percentages
VIDEOS
The meaning of percent
Khan Academy
•4th - 8th Grade
•5 Qs
Meaning of 109%
Khan Academy
•5th - 8th Grade
•10 Qs
Percents from fraction models
Khan Academy
•4th - 8th Grade
•10 Qs
Worked example: Converting a fraction (7/8) to a decimal
Khan Academy
•6th - 10th Grade
•10 Qs
Fraction, decimal, and percent from visual model
Khan Academy
•6th - 6th Grade
•13 Qs
Converting decimals to fractions 2 (ex 1)
Khan Academy
•5th - 8th Grade
•5 Qs
Fraction to decimal with rounding
Khan Academy
•6th - 10th Grade
•10 Qs
Rewriting decimals as fractions: 0.36
Khan Academy
•6th - 10th Grade
•6 Qs
Finding a percent
Khan Academy
•4th - 8th Grade
•10 Qs
Percent word problem: guavas
Khan Academy
•6th - 8th Grade
•10 Qs
Percent of a whole number
Khan Academy
•4th - 8th Grade
•10 Qs
Percent word problem: recycling cans
Khan Academy
•6th - 10th Grade
•10 Qs
Operations with decimals
VIDEOS
Subtracting decimals: 9.57-8.09
Khan Academy
•3th - 5th Grade
•6 Qs
Adding decimals: 0.822+5.65
Khan Academy
•6th - 6th Grade
•5 Qs
Adding decimals: 9.087+15.31
Khan Academy
•6th - 6th Grade
•3 Qs
Multiplying challenging decimals
Khan Academy
•5th - 8th Grade
•10 Qs
Multiplying decimals example
Khan Academy
•6th - 6th Grade
•1 Qs
Subtracting decimals: 39.1 - 0.794
Khan Academy
•6th - 6th Grade
•7 Qs
Dividing by a multi-digit decimal
Khan Academy
•5th - 8th Grade
•10 Qs
Dividing decimals with hundredths
Khan Academy
•6th - 6th Grade
•1 Qs
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