Understand subtraction as adding the additive inverse

Understand subtraction as adding the additive inverse

In this lesson you will learn to rethink a subtraction problem as an addition problem by using the additive inverse.

ADDITIONAL MATERIALS

STANDARDS

CCSS.7.NS.A.1.c Understand subtraction of rational numbers as adding the additive inverse, 𝘱 – 𝘲 = 𝘱 + (–𝘲). Show that the distance between two rational numbers on the number line is the absolute value of their difference, and apply this principle in real-world contexts.

TEKS.6.3.D add, subtract, multiply, and divide integers fluently; and

TEKS.7.3.A add, subtract, multiply, and divide rational numbers fluently; and

TEKS.7.3.B apply and extend previous understandings of operations to solve problems using addition, subtraction, multiplication, and division of rational numbers.

IN.8.C.1 Solve real-world problems with rational numbers by using multiple operations.

IN.7.C.2 Understand subtraction of rational numbers as adding the additive inverse, p – q = p + (–q). Show that the distance between two rational numbers on the number line is the absolute value of their difference, and apply this principle in real-world contexts.

VA.CE.6.6.b solve practical problems involving operations with integers; and

VA.CE.6.6.a add, subtract, multiply, and divide integers;

VA.CE.7.3 The student will solve single-step and multistep practical problems, using proportional reasoning.

VA.NS.7.1.e identify and describe absolute value of rational numbers.

[maria__cerdeira]

thanks for explaining this theme I was having trouble solving it but now I understand it better thanks to your explanation.