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 #138 : Operations & Algebraic Thinking

\displaystyle \frac{\begin{array}[b]{r}13\\ -\ 8\end{array}}{ \ \ \ \ \ \space ?}

Possible Answers:

\displaystyle 6

\displaystyle 4

\displaystyle 5

\displaystyle 8

\displaystyle 7

Correct answer:

\displaystyle 5

Explanation:

To subtract we can count backwards. Start at \displaystyle 13 and count back \displaystyle 8.

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

\displaystyle \frac{\begin{array}[b]{r}13\\ -\ 8\end{array}}{ \ \ \ \ \space 5}

Example Question #132 : Operations & Algebraic Thinking

\displaystyle \frac{\begin{array}[b]{r}5\\ -\ 5\end{array}}{ \ \ \ \ \space ?}

Possible Answers:

\displaystyle 0

\displaystyle 3

\displaystyle 5

\displaystyle 10

\displaystyle 1

Correct answer:

\displaystyle 0

Explanation:

To subtract we can count backwards. Start at \displaystyle 5 and count back \displaystyle 5.

\displaystyle 5, 4, 3, 2, 1, 0

\displaystyle \frac{\begin{array}[b]{r}5\\ -\ 5\end{array}}{ \ \ \ \ \space 0}

Example Question #140 : Operations & Algebraic Thinking

\displaystyle \frac{\begin{array}[b]{r}7\\ -\ 4\end{array}}{ \ \ \ \ \space ?}

Possible Answers:

\displaystyle 3

\displaystyle 5

\displaystyle 4

\displaystyle 2

\displaystyle 6

Correct answer:

\displaystyle 3

Explanation:

To subtract we can count backwards. Start at \displaystyle 7 and count back \displaystyle 4.

\displaystyle 7,6,5,4,3

\displaystyle \frac{\begin{array}[b]{r}7\\ -\ 4\end{array}}{ \ \ \ \ \space 3}

Example Question #141 : Operations & Algebraic Thinking

\displaystyle \frac{\begin{array}[b]{r}13\\ -\ 10\end{array}}{ \ \ \ \ \space ?}

Possible Answers:

\displaystyle 2

\displaystyle 4

\displaystyle 5

\displaystyle 6

\displaystyle 3

Correct answer:

\displaystyle 3

Explanation:

To subtract we can count backwards. Start at \displaystyle 13 and count back \displaystyle 10.

\displaystyle 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3

\displaystyle \frac{\begin{array}[b]{r}13\\ -\ 10\end{array}}{ \ \ \ \ \ \space 3}

Example Question #141 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

\displaystyle \frac{\begin{array}[b]{r}3\\ -\ 2\end{array}}{ \ \ \ \ \space ?}

Possible Answers:

\displaystyle 0

\displaystyle 3

\displaystyle 1

\displaystyle 5

\displaystyle 2

Correct answer:

\displaystyle 1

Explanation:

To subtract we can count backwards. Start at \displaystyle 3 and count back \displaystyle 2.

\displaystyle 3,2,1

\displaystyle \frac{\begin{array}[b]{r}3\\ -\ 2\end{array}}{ \ \ \ \ \space 1}

Example Question #441 : Ssat Elementary Level Quantitative (Math)

\displaystyle \frac{\begin{array}[b]{r}18\\ -\ 4\end{array}}{ \ \ \ \ \ \space ?}

Possible Answers:

\displaystyle 13

\displaystyle 14

\displaystyle 10

\displaystyle 12

\displaystyle 9

Correct answer:

\displaystyle 14

Explanation:

To subtract we can count backwards. Start at \displaystyle 18 and count back \displaystyle 4.

\displaystyle 18,17,16,15,14

\displaystyle \frac{\begin{array}[b]{r}18\\ -\ 4\end{array}}{ \ \ \ \space 14}

Example Question #442 : Ssat Elementary Level Quantitative (Math)

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

Possible Answers:

\displaystyle 3

\displaystyle 4

\displaystyle 1

\displaystyle 2

\displaystyle 0

Correct answer:

\displaystyle 0

Explanation:

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

\displaystyle 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0

\displaystyle \frac{\begin{array}[b]{r}20\\ -\ 20\end{array}}{ \ \ \ \ \space 0}

Example Question #145 : Operations & Algebraic Thinking

\displaystyle \frac{\begin{array}[b]{r}19\\ -\ 11\end{array}}{ \ \ \ \ \space ?}

Possible Answers:

\displaystyle 8

\displaystyle 11

\displaystyle 10

\displaystyle 9

\displaystyle 7

Correct answer:

\displaystyle 8

Explanation:

To subtract we can count backwards. Start at \displaystyle 19 and count back \displaystyle 11.

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

\displaystyle \frac{\begin{array}[b]{r}19\\ -\ 11\end{array}}{ \ \ \ \ \space 8}

Example Question #146 : Operations & Algebraic Thinking

\displaystyle \frac{\begin{array}[b]{r}18\\ -\ 15\end{array}}{ \ \ \ \ \space ?}

Possible Answers:

\displaystyle 7

\displaystyle 4

\displaystyle 3

\displaystyle 5

\displaystyle 6

Correct answer:

\displaystyle 3

Explanation:

To subtract we can count backwards. Start at \displaystyle 18 and count back \displaystyle 15.

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

\displaystyle \frac{\begin{array}[b]{r}18\\ -\ 15\end{array}}{ \ \ \ \ \ \space 3}

Example Question #147 : Operations & Algebraic Thinking

\displaystyle \frac{\begin{array}[b]{r}17\\ -\ 10\end{array}}{ \ \ \ \ \space ?}

Possible Answers:

\displaystyle 5

\displaystyle 6

\displaystyle 7

\displaystyle 3

\displaystyle 4

Correct answer:

\displaystyle 7

Explanation:

To subtract we can count backwards. Start at \displaystyle 17 and count back \displaystyle 10.

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

\displaystyle \frac{\begin{array}[b]{r}17\\ -\ 10\end{array}}{ \ \ \ \ \ \space 7}

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