Khan Academy

Subtracting a negative = adding a positive (K-A)

Subtracting negative numbers review (K-A)

Absolute value as distance between numbers (K-A)

Interpreting absolute value as distance (K-A)

Ordering expressions (K-A)

Substitution with negative numbers (K-A)

Equivalent expressions with negative numbers (K-A)

Interpreting negative number statements (K-A)

Negative number word problem: Alaska (K-A)

Negative number word problem: temperatures (K-A)

Adding & subtracting fractions (K-A)

Adding fractions with different signs (K-A)

Adding numbers with different signs (K-A)

Addition & subtraction: find the missing value (part 1 of 2) (K-A)

Addition & subtraction: find the missing value (part 2 of 2) (K-A)

Adding negative numbers on the number line (K-A)

Interpreting numeric expressions example (K-A)

Number equations & number lines (K-A)

Why a negative times a negative is a positive (K-A)

Dividing negative numbers review (K-A)

Dividing positive and negative numbers (K-A)

Multiplying negative numbers review (K-A)

Multiplying positive & negative numbers (K-A)

Negative numbers: multiplication and division-video (K-A)

Expressions with rational numbers (K-A)