## Real World Numbers: The Number SystemThis book provides support in keeping with the major goals of National Council of Teachers of Mathematics curriculum. It provides an important mathematical topic, the number system, which will be learned through K-8th grade, and used through high school and college. The instructional emphasis is designed to communicate knowledge and skills in mathematics across different grade levels, while offering the opportunity for children to learn about the number system in a fun and easy way. The book focuses on key areas of important emphasis, necessary for building math fluency in pre-algebra and algebra. |

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added or subtracted ADDITION AND MULTIPLICATION answer from numbers arrange the order associative property bottom number cardinal COMMUTATIVE PROPERTY completely factored counting numbers decimal that never DISTRIBUTIVE PROPERTY division sign factored into Prime factors of 30 group of objects imaginary number integers Irrational numbers kind of number MATHEMATICAL RULES Properties MULTIPLICATIVE IDENTITY PROPERTY multiplying or adding multiplying two numbers names of things natural numbers Negative Numbers Nominal numbers notation sign number portion Number System number that divides numbers added numbers and things Numbers are numbers numbers are positive numbers cannot divide numbers divide evenly Numbers have value numbers or things NUMBERS REAL NUMBERS Numbers The Number numbers to announce numbers to tell Odd composite numbers Odd numbers order of numbers ordinal numbers parentheses positive numbers prime factors prime numbers Proper Fraction rational numbers set of numbers subtract numbers SUBTRACTING COMPLEX NUMBERS symbol top number whole number ZERO IDENTITY PROPERTY