7.N.2.a Add, subtract, multiply, and divide rational numbers (e.g., positive and negative fractions, decimals, and integers).
7.N.2.b Apply properties of operations (commutative, associative, distributive, identity, inverse, zero) as strategies for problem solving with rational numbers.
Repeating Decimal
A decimal in which one or more digits repeat forever in a pattern. Example: 0.333… or 0.272727…
Multiplicative Inverse
A number that, when multiplied by another number, gives a product of 1. Example: the multiplicative inverse of ⅔ is ³⁄₂ because ⅔ × ³⁄₂ = 1.
Terminating Decimal
A decimal that ends after a certain number of digits. Example: 0.75 or 2.4
Additive Inverse
A number that, when added to another number, gives a sum of 0. Example: the additive inverse of 5 is −5 because 5 + (−5) = 0.
Complex Fraction
A fraction that has a fraction in the numerator, the denominator, or both. Example: (½)/(¾)