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(edited version that I rewrote since I thought my notes were very messy)

Math

Natural numbers: 1, 2, 3, 4.....infinity(biggest number)

Whole numbers: 0, 1, 2, 3.....infinity

Integers: There are negative integers(-1, -2, -3...), positive integers(1, 2, 3...), and the number 0

Rational numbers: 2/3, 5/9, -(4/3)(a negative fraction) and square root numbers written in it's formula. Rational numbers are numbers that can be written in the form of a/b, and b cannot be 0. a and b must be integers.

number line: intervals between numbers are equal. negative numbers are written as -ve and positive numbers are +ve.

Fractions that can be converted into decimals with an end to how many numbers are there after the decimal point are called terminating decimals(eg. 1/4 can be converted into 0.25)

Fractions that when converted into decimals do not have a end to how many numbers are there after the decimals point are called non-terminating decimals(e.g 1/3 is converted to 0.3333333333333333.... without an end to how many numbers are there after the decimal point)

Recurring decimals: Decimals that are non-terminating but have a pattern with the numbers(e.g 1/3 is converted to 0.33333... and the numbers after the decimal point is always 3)

Irrational numbers: non-terminating and non-recurring decimals(e.g pi, euler's number)

Multiplicative Inverse(reciprocal): A concept of any fraction multiplied by it's fraction flipped around equals to 1(e.g 2/3 x 3/2=1)

Prime numbers: Whole number that has 2 different factors. 1 of the factors must be 1 and the other must be the number itself.

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