# Common Core: Kindergarten Math : Understanding Addition and Subtraction

## Example Questions

### Example Question #1 : Operations & Algebraic Thinking

Explanation:

When we add we count up. We have  triangle in the first box, and then  triangles in the second box. In total we have  triangles. If you start at  on a number line and count up , you have .

### Example Question #2 : Operations & Algebraic Thinking

Explanation:

When we add we count up. We have  triangles in the first box, and then  triangles in the second box. In total we have  triangles. If you start at  on a number line and count up , you have .

### Example Question #3 : Operations & Algebraic Thinking

Explanation:

We have  triangles and we want to subtract  triangle, which means the same thing as take them away. We can cross off the  triangle that we are subtracting, and count the number that we have left. In this case we have  triangles left. Subtraction is like counting backwards. We can start at  and count back .

### Example Question #1 : Understanding Addition And Subtraction

Sarah has  square and Tim has  squares. How many squares do they have altogether?

Explanation:

If we count all the squares together we have  squares.

### Example Question #2376 : Operations

Jenny has  square and Joe has  squares. How many squares do they have altogether?

Explanation:

If we count all the squares together we have  squares.

### Example Question #5 : Operations & Algebraic Thinking

Cameron has  squares and Chuck has  square. How many squares do they have altogether?

Explanation:

If we count all the squares together we have  squares.

### Example Question #6 : Operations & Algebraic Thinking

Natalie has  squares and Ashley has  squares. How many squares do they have altogether?

Explanation:

If we count all the squares together we have  squares.

### Example Question #7 : Operations & Algebraic Thinking

Molly has  square and John has  squares. How many squares do they have altogether?

Explanation:

If we count all the squares together we have  square.

### Example Question #8 : Operations & Algebraic Thinking

Shelly has  square and Linda has  squares. How many squares do they have altogether?

Explanation:

If we count all the squares together we have  squares.

### Example Question #10 : Understanding Addition And Subtraction

Matt has  square and Lisa has  squares. How many squares do they have altogether?