SSAT Elementary Level Math : Operations

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

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Example Questions

Example Question #141 : Operations

\displaystyle \frac{\begin{array}[b]{r}18\\ -\ 2\end{array}}{ \ \ \space ?}

Possible Answers:

\displaystyle 18

\displaystyle 17

\displaystyle 19

\displaystyle 16

\displaystyle 20

Correct answer:

\displaystyle 16

Explanation:

To subtract we can count backwards. Start at \displaystyle 18 and count back \displaystyle 2.

\displaystyle 18, 17, 16

\displaystyle \frac{\begin{array}[b]{r}18\\ -\ 2\end{array}}{ \ \ \space 16}

Example Question #54 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

\displaystyle \frac{\begin{array}[b]{r}17\\ -\ 5\end{array}}{ \ \ \space ?}

Possible Answers:

\displaystyle 10

\displaystyle 9

\displaystyle 13

\displaystyle 12

\displaystyle 11

Correct answer:

\displaystyle 12

Explanation:

To subtract we can count backwards. Start at \displaystyle 17 and count back \displaystyle 5.

\displaystyle 17, 16, 15, 14, 13, 12

\displaystyle \frac{\begin{array}[b]{r}17\\ -\ 5\end{array}}{ \ \ \space 12}

Example Question #52 : Operations & Algebraic Thinking

\displaystyle \frac{\begin{array}[b]{r}16\\ -\ 8\end{array}}{ \ \ \space ?}

Possible Answers:

\displaystyle 7

\displaystyle 6

\displaystyle 8

\displaystyle 10

\displaystyle 9

Correct answer:

\displaystyle 8

Explanation:

To subtract we can count backwards. Start at \displaystyle 16 and count back \displaystyle 8.

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

\displaystyle \frac{\begin{array}[b]{r}16\\ -\ 8\end{array}}{ \ \ \ \space 8}

Example Question #53 : Operations & Algebraic Thinking

\displaystyle \frac{\begin{array}[b]{r}16\\ -\ 10\end{array}}{ \ \ \space ?}

Possible Answers:

\displaystyle 4

\displaystyle 6

\displaystyle 8

\displaystyle 5

\displaystyle 10

Correct answer:

\displaystyle 6

Explanation:

To subtract we can count backwards. Start at \displaystyle 16 and count back \displaystyle 10.

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

\displaystyle \frac{\begin{array}[b]{r}16\\ -\ 10\end{array}}{ \ \ \ \ \ \space 6}

Example Question #61 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

\displaystyle \frac{\begin{array}[b]{r}15\\ -\ 4\end{array}}{ \ \ \ \space ?}

Possible Answers:

\displaystyle 19

\displaystyle 10

\displaystyle 11

\displaystyle 9

\displaystyle 16

Correct answer:

\displaystyle 11

Explanation:

To subtract we can count backwards. Start at \displaystyle 15 and count back \displaystyle 4.

\displaystyle 15, 14, 13, 12, 11

\displaystyle \frac{\begin{array}[b]{r}15\\ -\ 4\end{array}}{ \ \ \ \space 11}

Example Question #61 : Operations & Algebraic Thinking

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

Possible Answers:

\displaystyle 8

\displaystyle 10

\displaystyle 9

\displaystyle 7

\displaystyle 11

Correct answer:

\displaystyle 9

Explanation:

To subtract we can count backwards. Start at \displaystyle 14 and count back \displaystyle 5.

\displaystyle 14, 13, 12, 11, 10, 9

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

Example Question #62 : Operations & Algebraic Thinking

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

Possible Answers:

\displaystyle 10

\displaystyle 9

\displaystyle 7

\displaystyle 6

\displaystyle 8

Correct answer:

\displaystyle 8

Explanation:

To subtract we can count backwards. Start at \displaystyle 13 and count back \displaystyle 5.

\displaystyle 13, 12, 11, 10, 9, 8

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

Example Question #64 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

\displaystyle \frac{\begin{array}[b]{r}12\\ -\ 6\end{array}}{ \ \ \ \space ?}

Possible Answers:

\displaystyle 4

\displaystyle 6

\displaystyle 18

\displaystyle 5

\displaystyle 3

Correct answer:

\displaystyle 6

Explanation:

To subtract we can count backwards. Start at \displaystyle 12 and count back \displaystyle 6.

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

\displaystyle \frac{\begin{array}[b]{r}12\\ -\ 6\end{array}}{ \ \ \ \space 6}

Example Question #65 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

\displaystyle \frac{\begin{array}[b]{r}11\\ -\ 4\end{array}}{ \ \ \ \space ?}

Possible Answers:

\displaystyle 9

\displaystyle 6

\displaystyle 10

\displaystyle 7

\displaystyle 8

Correct answer:

\displaystyle 7

Explanation:

To subtract we can count backwards. Start at \displaystyle 11 and count back \displaystyle 4.

\displaystyle 11, 10, 9, 8, 7

\displaystyle \frac{\begin{array}[b]{r}11\\ -\ 4\end{array}}{ \ \ \ \space 7}

Example Question #66 : Mentally Add And Subtract Within 20: Ccss.Math.Content.2.Oa.B.2

\displaystyle \frac{\begin{array}[b]{r}8\\ -\ 1\end{array}}{ \ \ \ \space ?}

Possible Answers:

\displaystyle 4

\displaystyle 9

\displaystyle 7

\displaystyle 5

\displaystyle 6

Correct answer:

\displaystyle 7

Explanation:

To subtract we can count backwards. Start at \displaystyle 8 and count back \displaystyle 1.

\displaystyle 8, 7

\displaystyle \frac{\begin{array}[b]{r}8\\ -\ 1\end{array}}{ \ \ \ \space 7}

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