Common Core: 2nd Grade Math : Count Within 1000 by 1s, 5s, 10s, and 100s, CCSS.Math.Content.2.NBT.A.2

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

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Example Questions

Example Question #11 : Count Within 1000 By 1s, 5s, 10s, And 100s, Ccss.Math.Content.2.Nbt.A.2

When counting by \(\displaystyle 5\)s, what number comes after \(\displaystyle 120?\)

 

Possible Answers:

\(\displaystyle 110\)

\(\displaystyle 125\)

\(\displaystyle 115\)

\(\displaystyle 105\)

\(\displaystyle 100\)

Correct answer:

\(\displaystyle 125\)

Explanation:

When counting by \(\displaystyle 5\)s, we add \(\displaystyle 5\) to our previous number. 

\(\displaystyle \frac{\begin{array}[b]{r}120\\ +\ 5\end{array}}{ \ \space 125}\)

Example Question #12 : Count Within 1000 By 1s, 5s, 10s, And 100s, Ccss.Math.Content.2.Nbt.A.2

When counting by \(\displaystyle 5\)s, what number comes after \(\displaystyle 110?\)

 

Possible Answers:

\(\displaystyle 115\)

\(\displaystyle 120\)

\(\displaystyle 125\)

\(\displaystyle 130\)

\(\displaystyle 105\)

Correct answer:

\(\displaystyle 115\)

Explanation:

When counting by \(\displaystyle 5\)s, we add \(\displaystyle 5\) to our previous number. 

\(\displaystyle \frac{\begin{array}[b]{r}110\\ +\ 5\end{array}}{ \ \space 115}\)

Example Question #13 : Count Within 1000 By 1s, 5s, 10s, And 100s, Ccss.Math.Content.2.Nbt.A.2

When counting by \(\displaystyle 5\)s, what number comes after \(\displaystyle 100?\)

 

Possible Answers:

\(\displaystyle 95\)

\(\displaystyle 90\)

\(\displaystyle 115\)

\(\displaystyle 105\)

\(\displaystyle 110\)

Correct answer:

\(\displaystyle 105\)

Explanation:

When counting by \(\displaystyle 5\)s, we add \(\displaystyle 5\) to our previous number. 

\(\displaystyle \frac{\begin{array}[b]{r}100\\ +\ 5\end{array}}{ \ \space 105}\)

Example Question #14 : Count Within 1000 By 1s, 5s, 10s, And 100s, Ccss.Math.Content.2.Nbt.A.2

When counting by \(\displaystyle 5\)s, what number comes after \(\displaystyle 90?\)

 

Possible Answers:

\(\displaystyle 95\)

\(\displaystyle 80\)

\(\displaystyle 75\)

\(\displaystyle 85\)

\(\displaystyle 100\)

Correct answer:

\(\displaystyle 95\)

Explanation:

When counting by \(\displaystyle 5\)s, we add \(\displaystyle 5\) to our previous number. 

\(\displaystyle \frac{\begin{array}[b]{r}90\\ +\ 5\end{array}}{ \ \ \space 95}\)

Example Question #12 : Count Within 1000 By 1s, 5s, 10s, And 100s, Ccss.Math.Content.2.Nbt.A.2

When counting by \(\displaystyle 5\)s, what number comes after \(\displaystyle 80?\)

 

Possible Answers:

\(\displaystyle 100\)

\(\displaystyle 90\)

\(\displaystyle 95\)

\(\displaystyle 85\)

\(\displaystyle 75\)

Correct answer:

\(\displaystyle 85\)

Explanation:

When counting by \(\displaystyle 5\)s, we add \(\displaystyle 5\) to our previous number. 

\(\displaystyle \frac{\begin{array}[b]{r}80\\ +\ 5\end{array}}{ \ \ \space 85}\)

Example Question #15 : Count Within 1000 By 1s, 5s, 10s, And 100s, Ccss.Math.Content.2.Nbt.A.2

When counting by \(\displaystyle 5\)s, what number comes after \(\displaystyle 70?\)

 

Possible Answers:

\(\displaystyle 55\)

\(\displaystyle 50\)

\(\displaystyle 65\)

\(\displaystyle 75\)

\(\displaystyle 60\)

Correct answer:

\(\displaystyle 75\)

Explanation:

When counting by \(\displaystyle 5\)s, we add \(\displaystyle 5\) to our previous number. 

\(\displaystyle \frac{\begin{array}[b]{r}70\\ +\ 5\end{array}}{ \ \ \space 75}\)

Example Question #2231 : Operations

When counting by \(\displaystyle 5\)s, what number comes after \(\displaystyle 60?\)

 

Possible Answers:

\(\displaystyle 85\)

\(\displaystyle 75\)

\(\displaystyle 65\)

\(\displaystyle 70\)

\(\displaystyle 80\)

Correct answer:

\(\displaystyle 65\)

Explanation:

When counting by \(\displaystyle 5\)s, we add \(\displaystyle 5\) to our previous number. 

\(\displaystyle \frac{\begin{array}[b]{r}60\\ +\ 5\end{array}}{ \ \ \space 65}\)

Example Question #2232 : Operations

When counting by \(\displaystyle 5\)s, what number comes after \(\displaystyle 50?\)

 

Possible Answers:

\(\displaystyle 60\)

\(\displaystyle 40\)

\(\displaystyle 45\)

\(\displaystyle 55\)

\(\displaystyle 65\)

Correct answer:

\(\displaystyle 55\)

Explanation:

When counting by \(\displaystyle 5\)s, we add \(\displaystyle 5\) to our previous number. 

\(\displaystyle \frac{\begin{array}[b]{r}50\\ +\ 5\end{array}}{ \ \ \space 55}\)

Example Question #18 : Count Within 1000 By 1s, 5s, 10s, And 100s, Ccss.Math.Content.2.Nbt.A.2

When counting by \(\displaystyle 5\)s, what number comes after \(\displaystyle 40?\)

 

Possible Answers:

\(\displaystyle 25\)

\(\displaystyle 45\)

\(\displaystyle 20\)

\(\displaystyle 35\)

\(\displaystyle 30\)

Correct answer:

\(\displaystyle 45\)

Explanation:

When counting by \(\displaystyle 5\)s, we add \(\displaystyle 5\) to our previous number. 

\(\displaystyle \frac{\begin{array}[b]{r}40\\ +\ 5\end{array}}{ \ \ \space 45}\)

Example Question #19 : Count Within 1000 By 1s, 5s, 10s, And 100s, Ccss.Math.Content.2.Nbt.A.2

When counting by \(\displaystyle 5\)s, what number comes after \(\displaystyle 30?\)

 

Possible Answers:

\(\displaystyle 40\)

\(\displaystyle 15\)

\(\displaystyle 25\)

\(\displaystyle 20\)

\(\displaystyle 35\)

Correct answer:

\(\displaystyle 35\)

Explanation:

When counting by \(\displaystyle 5\)s, we add \(\displaystyle 5\) to our previous number. 

\(\displaystyle \frac{\begin{array}[b]{r}30\\ +\ 5\end{array}}{ \ \ \space 35}\)

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