SSAT Elementary Level Math : How to subtract

Study concepts, example questions & explanations for SSAT Elementary Level Math

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Example Questions

Example Question #132 : Adding And Subtracting Within 20

\(\displaystyle \frac{\begin{array}[b]{r}7\\ -\ 2\end{array}}{ \ \ \ \space ?}\)

Possible Answers:

\(\displaystyle 3\)

\(\displaystyle 5\)

\(\displaystyle 4\)

\(\displaystyle 6\)

\(\displaystyle 2\)

Correct answer:

\(\displaystyle 5\)

Explanation:

To subtract we can count backwards. Start at \(\displaystyle 7\) and count back \(\displaystyle 2\).

\(\displaystyle 7,6,5\)

\(\displaystyle \frac{\begin{array}[b]{r}7\\ -\ 2\end{array}}{ \ \ \ \space 5}\)

Example Question #891 : Ssat Elementary Level Quantitative (Math)

\(\displaystyle 5\)

Possible Answers:

\(\displaystyle 8\)

\(\displaystyle 6\)

\(\displaystyle 10\)

\(\displaystyle 9\)

\(\displaystyle 7\)

Correct answer:

\(\displaystyle 6\)

Explanation:

To subtract we can count backwards. Start at \(\displaystyle 14\) and count back \(\displaystyle 9\).

\(\displaystyle 14, 13, 12, 11, 10, 9, 8, 7, 6, 5\)

\(\displaystyle \frac{\begin{array}[b]{r}14\\ -\ 9\end{array}}{ \ \ \ \space 5}\)

Example Question #901 : Ssat Elementary Level Quantitative (Math)

\(\displaystyle \frac{\begin{array}[b]{r}20\\ -\ 12\end{array}}{ \ \ \ \ \space ?}\)

Possible Answers:

\(\displaystyle 10\)

\(\displaystyle 8\)

\(\displaystyle 7\)

\(\displaystyle 9\)

\(\displaystyle 6\)

Correct answer:

\(\displaystyle 8\)

Explanation:

To subtract we can count backwards. Start at \(\displaystyle 20\) and count back \(\displaystyle 12\).

\(\displaystyle 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8\)

\(\displaystyle \frac{\begin{array}[b]{r}20\\ -\ 12\end{array}}{ \ \ \ \ \space 8}\)

Example Question #901 : Ssat Elementary Level Quantitative (Math)

\(\displaystyle \frac{\begin{array}[b]{r}20\\ -\ 13\end{array}}{ \ \ \ \space ?}\)

Possible Answers:

\(\displaystyle 9\)

\(\displaystyle 8\)

\(\displaystyle 10\)

\(\displaystyle 11\)

\(\displaystyle 7\)

Correct answer:

\(\displaystyle 7\)

Explanation:

To subtract we can count backwards. Start at \(\displaystyle 20\) and count back \(\displaystyle 13\).

\(\displaystyle 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7\)

\(\displaystyle \frac{\begin{array}[b]{r}20\\ -\ 13\end{array}}{ \ \ \ \ \ \space 7}\)

Example Question #131 : Adding And Subtracting Within 20

\(\displaystyle \frac{\begin{array}[b]{r}18\\ -\ 17\end{array}}{ \ \ \ \space ?}\)

Possible Answers:

\(\displaystyle 3\)

\(\displaystyle 2\)

\(\displaystyle 1\)

\(\displaystyle 0\)

\(\displaystyle 4\)

Correct answer:

\(\displaystyle 1\)

Explanation:

To subtract we can count backwards. Start at \(\displaystyle 18\) and count back \(\displaystyle 17\).

\(\displaystyle 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1\)

\(\displaystyle \frac{\begin{array}[b]{r}18\\ -\ 17\end{array}}{ \ \ \ \ \ \space 1}\)

Example Question #681 : Operations

\(\displaystyle \frac{\begin{array}[b]{r}17\\ -\ 11\end{array}}{ \ \ \ \space ?}\)

Possible Answers:

\(\displaystyle 4\)

\(\displaystyle 5\)

\(\displaystyle 2\)

\(\displaystyle 3\)

\(\displaystyle 6\)

Correct answer:

\(\displaystyle 6\)

Explanation:

To subtract we can count backwards. Start at \(\displaystyle 17\) and count back \(\displaystyle 11\).

\(\displaystyle 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6\)

\(\displaystyle \frac{\begin{array}[b]{r}17\\ -\ 11\end{array}}{ \ \ \ \ \space 6}\)

Example Question #112 : Adding And Subtracting Within 20: Ccss.Math.Content.1.Oa.C.6

\(\displaystyle \frac{\begin{array}[b]{r}16\\ -\ 7\end{array}}{ \ \ \ \space ?}\)

Possible Answers:

\(\displaystyle 6\)

\(\displaystyle 8\)

\(\displaystyle 7\)

\(\displaystyle 10\)

\(\displaystyle 9\)

Correct answer:

\(\displaystyle 9\)

Explanation:

To subtract we can count backwards. Start at \(\displaystyle 16\) and count back \(\displaystyle 7\).

\(\displaystyle 16, 15, 14, 13, 12, 11, 10, 9\)

\(\displaystyle \frac{\begin{array}[b]{r}16\\ -\ 7\end{array}}{ \ \ \ \space 9}\)

Example Question #902 : Ssat Elementary Level Quantitative (Math)

\(\displaystyle \frac{\begin{array}[b]{r}15\\ -\ 1\end{array}}{ \ \ \ \space ?}\)

Possible Answers:

\(\displaystyle 15\)

\(\displaystyle 16\)

\(\displaystyle 12\)

\(\displaystyle 14\)

\(\displaystyle 13\)

Correct answer:

\(\displaystyle 14\)

Explanation:

To subtract we can count backwards. Start at \(\displaystyle 15\) and count back \(\displaystyle 1\).

\(\displaystyle 15,14\)

\(\displaystyle \frac{\begin{array}[b]{r}15\\ -\ 1\end{array}}{ \ \ \space 14}\)

Example Question #681 : Operations

\(\displaystyle \frac{\begin{array}[b]{r}14\\ -\ 8\end{array}}{ \ \ \ \space ?}\)

Possible Answers:

\(\displaystyle 6\)

\(\displaystyle 2\)

\(\displaystyle 3\)

\(\displaystyle 5\)

\(\displaystyle 4\)

Correct answer:

\(\displaystyle 6\)

Explanation:

To subtract we can count backwards. Start at \(\displaystyle 14\) and count back \(\displaystyle 8\).

\(\displaystyle 14, 13, 12, 11, 10, 9, 8, 7, 6\)

\(\displaystyle \frac{\begin{array}[b]{r}14\\ -\ 8\end{array}}{ \ \ \ \space 6}\)

Example Question #901 : Ssat Elementary Level Quantitative (Math)

\(\displaystyle \frac{\begin{array}[b]{r}13\\ -\ 13\end{array}}{ \ \ \ \space ?}\)

Possible Answers:

\(\displaystyle 3\)

\(\displaystyle 4\)

\(\displaystyle 2\)

\(\displaystyle 1\)

\(\displaystyle 0\)

Correct answer:

\(\displaystyle 0\)

Explanation:

To subtract we can count backwards. Start at \(\displaystyle 13\) and count back \(\displaystyle 13\).

\(\displaystyle 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0\)

\(\displaystyle \frac{\begin{array}[b]{r}13\\ -\ 13\end{array}}{ \ \ \ \ \ \space 0}\)

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