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Foundations: Invisible Math

Middle School

Created on January 11, 2024

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Transcript

INVISIBLE MATH

Invisible Math

You can expand the place values after a number by adding a decimal and/or zeros.

Invisible Math

A number with no sign in front of it is understood to be POSITIVE.

Invisible Math

Any integer can be turned into a fraction by putting a one on the bottom. Remember a fraction means division, so 5 divided by 1 is still 5.

Invisible Math

Any variable with no coefficient has an understood coefficient of 1.

Invisible Math

Two variables with no signs inbetween is understood to be multiplication.

Invisible Math

Subtracting a value is the same thing as adding a negative.

Invisible Math

The index number of a square root is understood to be 2.

Invisible Math

A negative outside of parenthesis, brackets or absolute value bars can be understood as the coefficient -1.