Intro to elementary mathematics

Problem Solving:

a

Sequences

r

A sequence is an ordered list of objects, events, or n.umbers wich may be reffered to as elements of the sequence, members of the sequence or terms of the sequence

Arithmetic

r

An arithnmetic sequence are sequences of numbers with a common difference; that is if you subtracted any two consecutive terms in the sequence the difference is the same number.

Geometric

r

Geometric sequence are sequences of numbers with a common ratio; that is if you form the ratio of any two consecutive terms in the sequence the ratio is the same.

Prime numbers

composite numbers

Greatest common Factor

r

GCF; is notation for the greatest common factor of two number a&bFor example;a (4,6) the gcf of these two numbers is 2b (4,9) the GCF of these two numbers is 1

Least common multiple

Fractions

addtion of fractions

Subtraction of fractions

multiplication of fractions

Division of fractions

Percents

r

where we see percents* grades* humidity* banking* stats

Integers

whole numbers

Addition

r

The defiinion of additon of whole numbers is : let a & b be two disjoin infinite sets if n(a)=a and n(b)=b tthen a+b=n (aUB)

Subtraction

r

Subtration of whole numbers defintion is; for any whole numbers a and b such that a is greater than or equal to b a - b is the unique whole number c such that b+c=a

Division

partition

r

A partition is characterized by distrbuting a specificed quanity among a specifed number of partitions and determining the size in each partition.

partial quotients method

r

The partial quotents method is a few different methods for solving division.

Guessing method

scaffolding method

Colum division

Divisibility

r

Divisibiluty:there are four useful statements a is a factor of bb is a multiple of aa is a divisor of bb is divisivle by a

Ratio

Decimals

r

Decimals are numbers that have different place vaules,for example12.23 is a decimalyou can add decimals12.2+.08= 12.28

Subtracting decimals

Adding decimals

a

multiplying decimals

dividing decimals