Understand that 𝑝 + 𝑞 represents the distance |𝑞| from 𝑝 whose placement is determined by the sign of 𝑞. Interpret sums of rational numbers by describing real-world contexts.
The Number System
Apply and extend previous understandings of operations with fractions to add, subtract, multiply, and divide rational numbers.
Apply and extend previous understandings of addition and subtraction to add and subtract rational numbers.