Elementary math includes number theory, which is the study of whole numbers and relations between them. This unit includes in-depth instruction on factors, multiples, primes, composites, divisibility tests, and exponents. Try our elementary math lessons below, or browse other instructional units.

Elementary Math |
Description |

Factors and GCF | To define factor and greatest common factor. To find all factors of a whole number. To find the GCF of two or more whole numbers. |

Multiples and LCM | To define multiple and least common multiple. To find multiples of whole numbers. To find the LCM of two or more whole numbers. |

Prime and Composite Numbers |
To define primes and composites. To determine if a whole number is prime or composite by examining its factors. |

Divisibility Tests | To determine if larger whole numbers are prime or composite by using divisibility tests for 2, 3, 4, 5, 6, 9 and 10. |

Exponents | To define exponent, base and power. To learn exponential notation. To read and write numbers in exponential form. To convert between standard, factor and exponential form. |

Patterns and Exponents | To recognize patterns with exponents. To predict the next term in a sequence of numbers written in exponential form. |

Practice Exercises | To complete 10 additional exercises as practice with number theory. To assess students' understanding of all theory presented. |

Challenge Exercises | To solve 10 additional problems that challenge students' understanding of all theory presented. To hone students' problem-solving skills. |

Solutions | To review complete solutions to all exercises in this unit number theory unit. |