Operations & Algebraic Thinking

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Common Core: Kindergarten Math › Operations & Algebraic Thinking

Questions 1 - 10
1

Jessica has squares and Megan has squares. How many squares do they have altogether?

Explanation

Screen shot 2015 08 27 at 2.00.02 pm

If we count all the squares together we have squares.

2

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

Explanation

Screen shot 2015 08 27 at 11.32.42 am

If we count all the squares together we have square.

3

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

Explanation

Screen shot 2015 08 27 at 11.34.16 am

If we count all the squares together we have squares.

4

Jessica has squares and Megan has squares. How many squares do they have altogether?

Explanation

Screen shot 2015 08 27 at 2.00.02 pm

If we count all the squares together we have squares.

5

Nancy has squares and Mark has squares. How many squares do they have altogether?

Explanation

Screen shot 2015 08 27 at 2.04.01 pm

If we count all the squares together we have squares.

6

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

Explanation

Screen shot 2015 08 27 at 2.07.44 pm

If we count all the squares together we have squares.

7

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

Explanation

Screen shot 2015 08 27 at 4.39.24 pm

If we count all the squares together we have squares.

8

Nancy has squares and Mark has square. How many squares do they have altogether?

Explanation

Screen shot 2015 08 27 at 3.01.51 pm

If we count all the squares together we have squares.

9

Use the triangles Screen shot 2015 08 20 at 11.07.59 ambelow to help you answer the subtraction problem.

Screen shot 2015 08 24 at 9.58.04 am

Explanation

We have triangles and we want to subtract triangles, which means the same thing as take them away. We can cross off the triangles 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 .

Screen shot 2015 08 24 at 9.58.32 am

10

Use the triangles Screen shot 2015 08 20 at 11.07.59 ambelow to help you answer the subtraction problem.

Screen shot 2015 08 21 at 1.53.58 pm

Explanation

We have triangles and we want to subtract triangles, which means the same thing as take them away. We can cross off the triangles 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 .

Screen shot 2015 08 21 at 1.54.40 pm

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