## Key Concepts

• Subtraction of Integers
 $5 - 3$ $-5-\left(-3\right)$ $2$ $-2$ $2$ positives $2$ negatives When there would be enough counters of the color to take away, subtract. $-5 - 3$ $5-\left(-3\right)$ $-8$ $8$ $5$ negatives, want to subtract $3$ positives $5$ positives, want to subtract $3$ negatives Need neutral pairs Need neutral pairs When there would not be enough of the counters to take away, add neutral pairs.
• Subtraction Property
• $a-b=a+(-b)$
• $a-(-b)=a+b$
• Solve Application Problems
• Step 1. Identify what you are asked to find.
• Step 2. Write a phrase that gives the information to find it.
• Step 3. Translate the phrase to an expression.
• Step 4. Simplify the expression.
• Step 5. Answer the question with a complete sentence.