Decimal fractions with one figure after the decimal point (tenths) are introduced in the 4th grade, two figures (hundredths) at the end of the 5th grade, and three figures ... In grade 7, the students learn the four arithmetic operations on fractions together with the conversion of decimals and fractions, and ... By the 6th grade we find: The most widely used system of measures in the world is the metric system.

Title | : | The international (SI) metric system and how it works |

Author | : | Robert A. Hopkins |

Publisher | : | - 1975 |

Continue