1. Lesson 6-1: Making 10 to Subtract How can you make a 10 to help you subtract? First, I took away ____ counters to make a 10. Then, I took away ____ more counters from 10 to get ____.

2. Lesson 6-2: More with Making 10 to Subtract How can you make a 10 to help you solve a subtraction story problem? First, I took away ____ counters to make a 10. Then, I took away ____ more counters from 10 to get ____.

3. Lesson 6-3: Using Related Facts What are related facts? Related facts are number sentences that show the whole number and two parts in different ways. Ex:

4. Lesson 6-3: Using Related Facts ___ and ___ (are/are not) related facts because _____________. 1.8+7=15 and 15-9=6 2.5+9=14 and 14-9=5 3.7+5=12 and 5+7=12 4.19-10=9 and 19-9=10 5.16-7=9 and 7+9=16

5. Lesson 6-4: Fact Families How does the relationship between addition and subtraction create a fact family? First, I decide whether the numbers are a part or a whole. Then I can complete the fact family! Ex:

6. Lesson 6-5:Using Addition to Subtract How can you use addition to solve subtraction? * First, I will write a related addition fact. * Next, I will find the missing part. * Then, I will write the missing part in the subtraction sentence.

7. Lesson 6-6: Subtraction Facts How can you identify an addition fact that will help you solve a subtraction story? Both number sentences have the same ______ and ______. Ex: