Common Core: 2nd Grade Math : Common Core Math: Grade 2

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

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Example Questions

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. 

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

Example Question #521 : Common Core Math: Grade 2

When counting by \(\displaystyle 5\)s, what number comes after \(\displaystyle 20?\)

 

Possible Answers:

\(\displaystyle 25\)

\(\displaystyle 45\)

\(\displaystyle 40\)

\(\displaystyle 35\)

\(\displaystyle 30\)

Correct answer:

\(\displaystyle 25\)

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 #21 : 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 \(\displaystyle 10?\)

 

Possible Answers:

\(\displaystyle 20\)

\(\displaystyle 5\)

\(\displaystyle 25\)

\(\displaystyle 30\)

\(\displaystyle 15\)

Correct answer:

\(\displaystyle 15\)

Explanation:

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

\(\displaystyle \frac{\begin{array}[b]{r}10\\ +\ 5\end{array}}{ \ \ \space 15}\)

Example Question #1392 : How To Add

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

 

Possible Answers:

\(\displaystyle 20\)

\(\displaystyle 10\)

\(\displaystyle 15\)

\(\displaystyle 30\)

\(\displaystyle 25\)

Correct answer:

\(\displaystyle 10\)

Explanation:

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

\(\displaystyle \frac{\begin{array}[b]{r}5\\ +\ 5\end{array}}{ \ \ \space 10}\)

Example Question #1393 : How To Add

When counting by \(\displaystyle 5\)s, what number comes after \(\displaystyle 15?\)

 

Possible Answers:

\(\displaystyle 25\)

\(\displaystyle 35\)

\(\displaystyle 10\)

\(\displaystyle 30\)

\(\displaystyle 20\)

Correct answer:

\(\displaystyle 20\)

Explanation:

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

\(\displaystyle \frac{\begin{array}[b]{r}15\\ +\ 5\end{array}}{ \ \ \space 20}\)

Example Question #1392 : How To Add

When counting by \(\displaystyle 5\)s, what number comes after \(\displaystyle 25?\)

 

Possible Answers:

\(\displaystyle 20\)

\(\displaystyle 15\)

\(\displaystyle 30\)

\(\displaystyle 35\)

\(\displaystyle 40\)

Correct answer:

\(\displaystyle 30\)

Explanation:

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

\(\displaystyle \frac{\begin{array}[b]{r}25\\ +\ 5\end{array}}{ \ \ \space 30}\)

Example Question #22 : 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 \(\displaystyle 35?\)

 

Possible Answers:

\(\displaystyle 25\)

\(\displaystyle 30\)

\(\displaystyle 20\)

\(\displaystyle 40\)

\(\displaystyle 45\)

Correct answer:

\(\displaystyle 40\)

Explanation:

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

\(\displaystyle \frac{\begin{array}[b]{r}35\\ +\ 5\end{array}}{ \ \ \space 40}\)

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