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Course: 7th grade > Unit 3

Lesson 3: Intro to subtracting negative numbers
Math
7th grade
Integers: addition and subtraction
Intro to subtracting negative numbers
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Subtract with integer chips

Google Classroom

Problem

This is the key for the integer chips.
The key for the image shows that a positive integer chip represents 1, and a negative integer chip represents negative 1.
Juana's integer chip model of a subtraction equation is below. Crossed out chips are ones Juana took away.
Two rows of integer chips. The first row has 6 positive chips. The second row has 1 negative chip. The 1 negative chip is crossed out.
Complete Juana's subtraction equation.
5−(−1)=
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi