## Relating Counting to Addition and Subtraction

#### Aligned To Common Core Standard:

**Grade 1 Operations** - 1.OA.5, 1.OA.6

How Does Addition and Subtraction Relate to Counting Addition and subtraction are the two most basic operations in counting. In simple terms, it is just like moving forward and backward. The addition means going forward for such as 6 + 1, or 4 + 3 and subtraction means going backward such as 5 - 2 or 9 - 7. Let’s learn these two operations separately. Addition is the operation in which we count two different set and then add them together, or we simply add numbers together. In addition, the answer is always bigger than all the numbers combined in the process, i.e. 4 + 3 = 7. We can see that 7 is greater than 4 and 3. In normal subtraction, we remove a smaller number from the bigger number and then count what is left. For example, when we see the equation 5 – 2, it means 2 will be removed from the number 5. When 5 is removed from 2, the answer is 3. As mentioned earlier, subtraction means counting backwards, which is, in this case, means moving two spaces back from 5. i.e., 5, 4, 3, 2, 1. When we jump two spaces back, we get 3. These are two most interchangeable mathematical operations there are. You will get a great deal of use out of these worksheets.

- Counting With Sums Step-by-step
Lesson- We work on skip by 2s to 20. We show it as repeated
addition.

- Skip Counting and Sequences Guided
Lesson - Skip counting by 3s, 4s, and find a missing number
in a sequence.

- Guided Lesson Explanation
- We work through all of the answers for you.

- Sentence Based Practice Worksheet
- These are like mini-word problems that all involve sums and differences.

- Matching Sums and Equations Worksheet - We give you a series of addition equations and ask you to match it to their sums.

- Guided Lesson 1 - Can you catch your mistake?
- Step-by-step Lesson 1 - Should have called this the count by 2s lesson.
- Count by 5s Lesson 2 - There is a big gap from counting by 2s to counting by 5s.
- Lesson 3 - Time to count by 4s in this sequence.
- Write What's Missing Guided Lesson 4 - There is a hole in this pattern. Plug it up!
- Matching Worksheet- Heavy sums practice that will lead them into the next level.
- Write the Missing Number Worksheet- Fixed sequences that are all but finished.
- Relate Counting to Operations Practice- These are super empty patterns for you to work with.
- Circle the Wrong Answer Practice Worksheet - All the patterns are wrong. Find the number that botched it!

#### Guided Lessons

These sheets will lead students to start to contemplate patterns and ordered systems.

#### Practice Worksheets

After students have a good handle on the skill, start using these sheets.