" Number relationships-or math strategies-are comprised of several crucial functions: Whole Number - Any number that does not have a decimal or fraction portion.Starting in kindergarten and moving through the first grade, students of early math begin to develop a mental fluency with numbers and the relationships between them known as " number sense. With numbers, this is often written with a comma every three places.Įxample: 3,000,000 is standard form for writing three million Standard Form - Standard form is an agreed upon way to write things. Click on Roman Numbers for Kids to learn more. Roman Numerals - Roman Numerals use letters to represent numbers. Rational Number - A rational number is any number that can be written as a fraction using two integers. Prime - A prime number is any whole number greater than 1 that only has the number 1 and itself as factors.Įxample: The first 8 prime numbers are 2,3,5,7,11,13,17, and 19. Pi is useful in solving geometry problems with circles and spheres.
It starts out 3.14159, but continues on forever. It is an irrational number that never ends. Rather than represent quantity, they represent the rank or position of something.Įxample: Sally was 5th in line or Jim finished 2nd in the race. Ordinal - Ordinal numbers represent the order of items in a set. Odd - Numbers that do not divide evenly by 2. The octal number system is used a lot with computers.Įxample: 10 octal is the same as 8 decimal. Numeral - A numeral is a word or a symbol that represents a number.Įxample: The word "eight" and the symbol "8" both are numerals that represent the number 8. They also could be called positive integers. Natural or Counting Numbers - These are the numbers we use all the time for counting. Irrational Numbers - An irrational number is a number that can be written as a decimal, but cannot be written as a simple fraction.Įxample: The number pi cannot be written as a fraction but is written as a decimal 3.14159… Fractions and decimals are not integers.Įxample: -5, -1, 0, 12, 472 are all integers Integer - An integer is a whole number including zero, positive, and negative numbers. It can be represented by writing three periods …Įxample: 1,3,5,7,9, … is an infinite sequence of odd numbers Infinite - An infinite number is so large it cannot be counted. It is used a lot in computer programming.Įxample: FF is the hexadecimal number for 255. It has 16 numbers including 0-9 and A, B, C, D, E, F. Hexadecimal - Hexadecimal is a base-16 number system. Even numbers end with a 2,4,6,8, or 0.Įxample: 2, 4, 26, 38, 90 are all even numbers.įraction - A number the represents part of a whole. These are the numbers we use every day.Įxample: There are 10 numerals in the decimal numbering system 0,1,2,3,4,5,6,7,8,9ĭecomposing - When you decompose a number, you break it into its component parts.Įxample: 5,124 becomes 5,000 + 100 + 20 + 4ĭescending Order - A list of numbers or values from greatest to least, but doesn't have to have a fixed pattern.Įven - Even numbers can be divided by 2. 19 and 31 are NOT composite numbers.ĭecimals - A decimal is a base-10 number.
A composite number cannot be a prime number.Įxample: 20, 12, 55 are all composite numbers. This means there are only two numerals 0 and 1.Įxample: 11 binary is the same as 3 decimal, 110 binary is the same as 6 decimal.Ĭardinal Numbers - A cardinal number answers the question "how many?"Įxample: 12 footballs….12 is a cardinal numberĬomposite - A composite number is a positive integer that has a divisor other than itself and one. Glossary and Terms: Types of Numbers Arithmetic Progression - A sequence of numbers where the difference between each number is the same.Įxample: 3, 6, 9, 12, 15, 18, 21……is an arithmetic progression where the difference is 3.Īscending Order - A list of numbers or values from least to greatest, but doesn't have to have a fixed pattern.īinary - The binary number system is a "base-2" number system.
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