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Common Core: 2nd Grade Math : Use Addition to Determine Number of Objects in a Rectangular Array: CCSS.Math.Content.2.OA.C.4

Study concepts, example questions & explanations for Common Core: 2nd Grade Math

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All Common Core: 2nd Grade Math Resources

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Example Questions

Example Question #1 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

What is the equation that shows the sum of the squares represented by this rectangular array?

Screen shot 2015 07 20 at 12.14.50 pm

Possible Answers:

6+2=12 \(\displaystyle 6+2=12\)

\(\displaystyle 3+3+3+3=12\)

\(\displaystyle 4+4+4+4=12\)

4+3=12 \(\displaystyle 4+3=12\)

3+3+3=9 \(\displaystyle 3+3+3=9\)

Correct answer:

\(\displaystyle 3+3+3+3=12\)

Explanation:

When we count the number of squares in this picture we get \(\displaystyle 12\). We have \(\displaystyle 4\) rows with \(\displaystyle 3\) squares in each row. Our math equation for this set could be written as \(\displaystyle 3+3+3+3=12\)

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Example Question #2 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

What is the equation that shows the sum of the squares represented by this rectangular array?

Screen shot 2015 07 20 at 12.33.14 pm

Possible Answers:

2+1=4 \(\displaystyle 2+1=4\)

2+2=6 \(\displaystyle 2+2=6\)

2+2=4 \(\displaystyle 2+2=4\)

1+3=4 \(\displaystyle 1+3=4\)

3+1=4 \(\displaystyle 3+1=4\)

Correct answer:

2+2=4 \(\displaystyle 2+2=4\)

Explanation:

When we count the number of squares in this picture we get \(\displaystyle 4\). We have \(\displaystyle 2\) rows with \(\displaystyle 2\) squares in each row. Our math equation for this set could be written as 2+2=4. \(\displaystyle 2+2=4.\)

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Example Question #1 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

What is the equation that shows the sum of the squares represented by this rectangular array?

Screen shot 2015 07 20 at 12.43.39 pm

Possible Answers:

5+1=6 \(\displaystyle 5+1=6\)

2+4=6 \(\displaystyle 2+4=6\)

4+2=6 \(\displaystyle 4+2=6\)

3+3=6 \(\displaystyle 3+3=6\)

2+2+2=6 \(\displaystyle 2+2+2=6\)

Correct answer:

2+2+2=6 \(\displaystyle 2+2+2=6\)

Explanation:

When we count the number of squares in this picture we get \(\displaystyle 6\). We have \(\displaystyle 3\) rows with \(\displaystyle 2\) squares in each row. Our math equation for this picture could be written as \(\displaystyle 2+2+2=6.\)

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Example Question #2 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

What is the equation that shows the sum of the squares represented by this rectangular array?

Screen shot 2015 07 20 at 12.53.02 pm

Possible Answers:

6+2=8 \(\displaystyle 6+2=8\)

4+4=8 \(\displaystyle 4+4=8\)

4+2+2=6 \(\displaystyle 4+2+2=6\)

\(\displaystyle 2+2+2+2=8\)

5+3=8 \(\displaystyle 5+3=8\)

Correct answer:

4+4=8 \(\displaystyle 4+4=8\)

Explanation:

When we count the number of squares in this picture we get \(\displaystyle 8\). We have \(\displaystyle 2\) rows with \(\displaystyle 4\) squares in each row. Our math equation for this picture could be written as 4+4=8. \(\displaystyle 4+4=8.\)

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Example Question #5 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

What is the equation that shows the sum of the squares represented by this rectangular array?

Screen shot 2015 07 20 at 1.04.51 pm

Possible Answers:

10+5=15 \(\displaystyle 10+5=15\)

\(\displaystyle 5+5+5=15.\)

5+5=10 \(\displaystyle 5+5=10\)

\(\displaystyle 10+10=20\)

\(\displaystyle 5+3+2+5=15\)

Correct answer:

\(\displaystyle 5+5+5=15.\)

Explanation:

When we count the number of squares in this picture we get \(\displaystyle 15\). We have \(\displaystyle 3\) rows with \(\displaystyle 5\) squares in each row. Our math equation for this picture could be written as \(\displaystyle 5+5+5=15.\)

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Example Question #6 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

What is the equation that shows the sum of the squares represented by this rectangular array?

Screen shot 2015 07 20 at 1.14.34 pm

Possible Answers:

\(\displaystyle 4+4+4=12\)

6+6=12 \(\displaystyle 6+6=12\)

8+4=12 \(\displaystyle 8+4=12\)

\(\displaystyle 4+4+4+4=12\)

\(\displaystyle 6+2+4=12\)

Correct answer:

\(\displaystyle 4+4+4=12\)

Explanation:

When we count the number of squares in each box we get \(\displaystyle 12\). We have \(\displaystyle 3\) rows with \(\displaystyle 4\) squares in each row. Our math equation for this picture could be written as \(\displaystyle 4+4+4=12.\)

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Example Question #6 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

What is the equation that shows the sum of the squares represented by this rectangular array?

Screen shot 2015 07 20 at 2.11.33 pm

Possible Answers:

\(\displaystyle 12+12=24\)

\(\displaystyle 4+4+4+4+4=20\)

\(\displaystyle 10+10=20\)

\(\displaystyle 4+4+4+4+4+4=24\)

\(\displaystyle 4+4+4+4=20\)

Correct answer:

\(\displaystyle 4+4+4+4+4=20\)

Explanation:

When we count the number of squares in this picture we get \(\displaystyle 20\). We have \(\displaystyle 5\) rows with \(\displaystyle 4\) squares in each row. Our math equation for this picture could be written as \(\displaystyle 4+4+4+4+4=20.\)

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Example Question #7 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

What is the equation that shows the sum of the squares represented by this rectangular array?

Screen shot 2015 07 20 at 3.07.03 pm

Possible Answers:

4+2=6 \(\displaystyle 4+2=6\)

3+3=6 \(\displaystyle 3+3=6\)

2+2+2=6 \(\displaystyle 2+2+2=6\)

5+1=6 \(\displaystyle 5+1=6\)

3+3+3=6 \(\displaystyle 3+3+3=6\)

Correct answer:

3+3=6 \(\displaystyle 3+3=6\)

Explanation:

When we count the number of squares within the box we get \(\displaystyle 6\). We have \(\displaystyle 2\) rows with \(\displaystyle 3\) squares in each row. Our math equation for this picture could be written as 3+3=6. \(\displaystyle 3+3=6.\)

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Example Question #8 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

What is the equation that shows the sum of the squares represented by this rectangular array?

Screen shot 2015 07 20 at 3.12.58 pm

Possible Answers:

\(\displaystyle 4+4+4+4+4=16\)

\(\displaystyle 4+4+4+4=16\)

8+8=16 \(\displaystyle 8+8=16\)

10+6=16 \(\displaystyle 10+6=16\)

6+10=16 \(\displaystyle 6+10=16\)

Correct answer:

\(\displaystyle 4+4+4+4=16\)

Explanation:

When we count the number of squares within the box we get \(\displaystyle 16\). We have \(\displaystyle 4\) rows with \(\displaystyle 4\) squares in each row. Our math equation for this picture could be written as \(\displaystyle 4+4+4+4=16.\)

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Example Question #3 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

What is the equation that shows the sum of the squares represented by this rectangular array?

Screen shot 2015 07 20 at 1.21.36 pm

Possible Answers:

\(\displaystyle 15+10=25\)

\(\displaystyle 5+5+5+5+5=25\)

\(\displaystyle 5+5+5+5=20\)

\(\displaystyle 10+10+5=25\)

\(\displaystyle 10+10=20\)

Correct answer:

\(\displaystyle 5+5+5+5+5=25\)

Explanation:

When you count the number of squares in this picture you get \(\displaystyle 25\). We have \(\displaystyle 5\) rows with \(\displaystyle 5\) squares in each row. Our math equation for this picture could be written as \(\displaystyle 5+5+5+5+5=25.\)

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All Common Core: 2nd Grade Math Resources

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Common Core: 2nd Grade Math : Use Addition to Determine Number of Objects in a Rectangular Array: CCSS.Math.Content.2.OA.C.4

Study concepts, example questions & explanations for Common Core: 2nd Grade Math

All Common Core: 2nd Grade Math Resources

Example Questions

Example Question #1 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

Example Question #2 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

Example Question #1 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

Example Question #2 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

Example Question #5 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

Example Question #6 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

Example Question #6 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

Example Question #7 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

Example Question #8 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

Example Question #3 : Use Addition To Determine Number Of Objects In A Rectangular Array: Ccss.Math.Content.2.Oa.C.4

All Common Core: 2nd Grade Math Resources

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