Number Theory, Geometry, Topology, Binary and Exponential Arithmetic, and much, much more!Also note that the onea#39;s digits decrease from 9 to 1 while the tena#39;s digits increase from 0 to 8. Point out that because 9 = 10a 1, the properties of nine are closely related to the properties often. For example, 9- 2 = (10a 1) -2 = 20 a 2 = 18.

Title | : | Making Pre-Algebra Come Alive |

Author | : | Alfred S. Posamentier |

Publisher | : | Corwin Press - 2000-07-21 |

Continue