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Common Core: Kindergarten Math : Operations & Algebraic Thinking

Study concepts, example questions & explanations for Common Core: Kindergarten Math

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All Common Core: Kindergarten Math Resources

7 Diagnostic Tests 119 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #1 : Understanding Addition And Subtraction

Add the triangles below.

Screen shot 2015 08 20 at 11.52.36 am

Possible Answers:

$\displaystyle 8$

$\displaystyle 9$

$\displaystyle 10$

Correct answer:

$\displaystyle 9$

Explanation:

When we add we count up. We have $\displaystyle 1$ triangle in the first box, and then $\displaystyle 8$ triangles in the second box. In total we have $\displaystyle 9$ triangles. If you start at $\displaystyle 1$ on a number line and count up $\displaystyle 8$ , you have $\displaystyle 9$ .

$\displaystyle 1, 2,3,4,5,6,7,8,9$

Screen shot 2015 08 20 at 11.58.41 am

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Example Question #1 : Understanding Addition And Subtraction

Add the triangles below.

Screen shot 2015 08 20 at 2.54.55 pm

Possible Answers:

$\displaystyle 5$

$\displaystyle 4$

$\displaystyle 6$

Correct answer:

$\displaystyle 6$

Explanation:

When we add we count up. We have $\displaystyle 4$ triangles in the first box, and then $\displaystyle 2$ triangles in the second box. In total we have $\displaystyle 6$ triangles. If you start at $\displaystyle 4$ on a number line and count up $\displaystyle 2$ , you have $\displaystyle 6$ .

4,5,6 $\displaystyle 4,5,6$

Screen shot 2015 08 20 at 2.58.17 pm

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Example Question #1 : Understanding Addition And Subtraction

Use the triangles below to help you answer the subtraction problem.

Screen shot 2015 08 21 at 12.23.37 pm

Possible Answers:

$\displaystyle 6$

$\displaystyle 8$

$\displaystyle 7$

Correct answer:

$\displaystyle 7$

Explanation:

We have $\displaystyle 8$ triangles and we want to subtract $\displaystyle 1$ triangle, which means the same thing as take them away. We can cross off the $\displaystyle 1$ triangle that we are subtracting, and count the number that we have left. In this case we have $\displaystyle 7$ triangles left. Subtraction is like counting backwards. We can start at $\displaystyle 8$ and count back $\displaystyle 1$ .

8,7 $\displaystyle 8,7$

Screen shot 2015 08 21 at 12.23.53 pm

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Example Question #1 : Operations & Algebraic Thinking

Sarah has $\displaystyle 1$ square and Tim has $\displaystyle 2$ squares. How many squares do they have altogether?

Possible Answers:

$\displaystyle 4$

$\displaystyle 2$

$\displaystyle 3$

Correct answer:

$\displaystyle 3$

Explanation:

1+2=3 $\displaystyle 1+2=3$

Screen shot 2015 08 27 at 11.22.06 am

If we count all the squares together we have $\displaystyle 3$ squares.

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Example Question #1 : Understanding Addition And Subtraction

Jenny has $\displaystyle 1$ square and Joe has $\displaystyle 8$ squares. How many squares do they have altogether?

Possible Answers:

$\displaystyle 8$

$\displaystyle 9$

$\displaystyle 10$

Correct answer:

$\displaystyle 9$

Explanation:

1+8=9 $\displaystyle 1+8=9$

Screen shot 2015 08 27 at 11.29.39 am

If we count all the squares together we have $\displaystyle 9$ squares.

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Example Question #3 : Operations & Algebraic Thinking

Cameron has $\displaystyle 2$ squares and Chuck has $\displaystyle 1$ square. How many squares do they have altogether?

Possible Answers:

$\displaystyle 3$

$\displaystyle 2$

$\displaystyle 1$

Correct answer:

$\displaystyle 3$

Explanation:

2+1=3 $\displaystyle 2+1=3$

Screen shot 2015 08 27 at 11.34.16 am

If we count all the squares together we have $\displaystyle 3$ squares.

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Example Question #1 : Understanding Addition And Subtraction

Natalie has $\displaystyle 2$ squares and Ashley has $\displaystyle 0$ squares. How many squares do they have altogether?

Possible Answers:

$\displaystyle 4$

$\displaystyle 2$

$\displaystyle 3$

Correct answer:

$\displaystyle 2$

Explanation:

2+0=2 $\displaystyle 2+0=2$

Screen shot 2015 08 27 at 11.33.32 am

If we count all the squares together we have $\displaystyle 2$ squares.

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Example Question #1 : Understanding Addition And Subtraction

Molly has $\displaystyle 1$ square and John has $\displaystyle 0$ squares. How many squares do they have altogether?

Possible Answers:

$\displaystyle 3$

$\displaystyle 2$

$\displaystyle 1$

Correct answer:

$\displaystyle 1$

Explanation:

1+0=1 $\displaystyle 1+0=1$

Screen shot 2015 08 27 at 11.32.42 am

If we count all the squares together we have $\displaystyle 1$ square.

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Example Question #1 : Operations & Algebraic Thinking

Shelly has $\displaystyle 1$ square and Linda has $\displaystyle 9$ squares. How many squares do they have altogether?

Possible Answers:

$\displaystyle 9$

$\displaystyle 10$

$\displaystyle 8$

Correct answer:

$\displaystyle 10$

Explanation:

1+9=10 $\displaystyle 1+9=10$

Screen shot 2015 08 27 at 11.31.35 am

If we count all the squares together we have $\displaystyle 10$ squares.

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Example Question #2 : Operations & Algebraic Thinking

Matt has $\displaystyle 1$ square and Lisa has $\displaystyle 7$ squares. How many squares do they have altogether?

Possible Answers:

$\displaystyle 9$

$\displaystyle 10$

$\displaystyle 8$

Correct answer:

$\displaystyle 8$

Explanation:

1+7=8 $\displaystyle 1+7=8$

Screen shot 2015 08 27 at 11.28.50 am

If we count all the squares together we have $\displaystyle 8$ squares.

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All Common Core: Kindergarten Math Resources

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Common Core: Kindergarten Math : Operations & Algebraic Thinking

Study concepts, example questions & explanations for Common Core: Kindergarten Math

All Common Core: Kindergarten Math Resources

Example Questions

Example Question #1 : Understanding Addition And Subtraction

Example Question #1 : Understanding Addition And Subtraction

Example Question #1 : Understanding Addition And Subtraction

Example Question #1 : Operations & Algebraic Thinking

Example Question #1 : Understanding Addition And Subtraction

Example Question #3 : Operations & Algebraic Thinking

Example Question #1 : Understanding Addition And Subtraction

Example Question #1 : Understanding Addition And Subtraction

Example Question #1 : Operations & Algebraic Thinking

Example Question #2 : Operations & Algebraic Thinking

All Common Core: Kindergarten Math Resources

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