Absolute value
Math is fun
https://www.mathsisfun.com/numbers/absolute-value.html
Khan Academy
https://www.khanacademy.org/math/arithmetic/arith-review-negative-numbers/arith-review-abs-value/v/absolute-value-of-integers
Math is fun
https://www.mathsisfun.com/numbers/absolute-value.html
Khan Academy
https://www.khanacademy.org/math/arithmetic/arith-review-negative-numbers/arith-review-abs-value/v/absolute-value-of-integers
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