SSAT Middle Level Math : SSAT Middle Level Quantitative (Math)

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

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Example Questions

Example Question #71 : How To Find Mean

Find the mean for this set of numbers: 

\(\displaystyle 41, 44, 40, 46, 49\)

Possible Answers:

\(\displaystyle 40\)

\(\displaystyle 44\)

\(\displaystyle 45\)

\(\displaystyle 46\)

\(\displaystyle 46.5\)

Correct answer:

\(\displaystyle 44\)

Explanation:

First add all the numbers from the set:

\(\displaystyle 41+44+ 40+ 46+49=220\)

Then divide by the amount of numbers in the set:

\(\displaystyle 220\div 5=44\)

Answer: \(\displaystyle 44\)

Example Question #321 : Data Analysis

What is the mean of the set?

\(\displaystyle 8.5, 12, 6, 7.5\)

Possible Answers:

\(\displaystyle 8\)

\(\displaystyle 8.5\)

\(\displaystyle 3\)

\(\displaystyle 9\)

Correct answer:

\(\displaystyle 8.5\)

Explanation:

The mean of a set is found by dividing the sum of the set by the number of items in the set. This gives us the equation:

\(\displaystyle \frac{8.5+12+6+7.5}{4}\)

\(\displaystyle \frac{34}{4}\)

\(\displaystyle 8.5\)

Example Question #322 : Data Analysis

Find the mean of this set of numbers:

\(\displaystyle 75,78,71,72,79\)

Possible Answers:

\(\displaystyle 75\)

\(\displaystyle 79\)

\(\displaystyle 8\)

\(\displaystyle 71\)

Correct answer:

\(\displaystyle 75\)

Explanation:

The mean is the average of the set.

First sum up the numbers:

\(\displaystyle 75+78+71+72+79=375\)

Then divide the sum by the number of elements in the set:

\(\displaystyle 375\div 5=75\)

Answer: \(\displaystyle 75\)

 

 

Example Question #511 : Ssat Middle Level Quantitative (Math)

Find the median of this set of numbers:

\(\displaystyle 56,58,52, 57, 59\)

 

 

Possible Answers:

\(\displaystyle 52\)

\(\displaystyle 57\)

\(\displaystyle 51\)

\(\displaystyle 59\)

Correct answer:

\(\displaystyle 57\)

Explanation:
First order the numbers from least to greatest:
 
\(\displaystyle 52,56,57,58,59\)
 
Then identify the middle number: \(\displaystyle 57\)
 
Answer: \(\displaystyle 57\)

Example Question #512 : Ssat Middle Level Quantitative (Math)

Find the mean of this set of numbers:

\(\displaystyle 56,58,52, 54,50\)

Possible Answers:

\(\displaystyle 57\)

\(\displaystyle 270\)

\(\displaystyle 54\)

\(\displaystyle 56\)

Correct answer:

\(\displaystyle 54\)

Explanation:
The mean is the average of the set.
 
First add up the numbers:

\(\displaystyle 56+58+52,+54+50=270\)

Then divide by the number of elements in the set:

\(\displaystyle 270\div 5=54\)

Answer: \(\displaystyle 54\)

Example Question #513 : Ssat Middle Level Quantitative (Math)

Find the mean of this set of numbers:

\(\displaystyle 95, 98, 93, 97, 92\)

Possible Answers:

\(\displaystyle 475\)

\(\displaystyle 96\)

\(\displaystyle 97\)

\(\displaystyle 95\)

Correct answer:

\(\displaystyle 95\)

Explanation:

The mean is the average.

First, add up all of the numbers in the set:

\(\displaystyle 95+98+93+97+92=475\)

Then, divide by the number of elements in the set:

\(\displaystyle 475\div 5=95\)

Answer: \(\displaystyle 95\)

 

Example Question #514 : Ssat Middle Level Quantitative (Math)

Solve using the distributive property:

\(\displaystyle 3(9+12)=\)

 

Possible Answers:

\(\displaystyle 29\)

\(\displaystyle 63\)

\(\displaystyle 25\)

\(\displaystyle 36\)

Correct answer:

\(\displaystyle 63\)

Explanation:

Multiply each number in parentheses by 3:

\(\displaystyle 3*9=27\)

\(\displaystyle 3*12=36\)

Then add them together:

\(\displaystyle 27+36=63\)

Answer: \(\displaystyle 63\)

Example Question #515 : Ssat Middle Level Quantitative (Math)

What is the mean of the given set?

\(\displaystyle 15,\ 12,\ 9,\ 3,\ -9\)

Possible Answers:

\(\displaystyle 7\)

\(\displaystyle 9\)

\(\displaystyle 7.5\)

\(\displaystyle 6\)

\(\displaystyle 12\)

Correct answer:

\(\displaystyle 6\)

Explanation:

The mean of the set can be found by adding together all the numbers, and then dividing by the number of items in the set. 

\(\displaystyle \frac{15+12+9+3-9}{5}=\frac{30}{5}=6\)

Example Question #516 : Ssat Middle Level Quantitative (Math)

Find the mean of this set of numbers:

\(\displaystyle 57,59,51,53,55\)

Possible Answers:

\(\displaystyle 55\)

\(\displaystyle 275\)

\(\displaystyle 53\)

\(\displaystyle 5\)

Correct answer:

\(\displaystyle 55\)

Explanation:

First add up all of the numbers in the set:

\(\displaystyle 57+59+51+53+55=275\)

Then divide by the number of elements in the set:

\(\displaystyle 275\div 5=55\)

Answer: \(\displaystyle 55\)

Example Question #517 : Ssat Middle Level Quantitative (Math)

In Ms. Olson's class, there were 5 students who took an exam, earning a mean score of 86. Jacob then took the exam as well, earning a score of 91. What is the new mean?

Possible Answers:

\(\displaystyle 89\)

\(\displaystyle 85\)

\(\displaystyle 86\)

\(\displaystyle 87\)

Correct answer:

\(\displaystyle 86\)

Explanation:

The mean is found by adding the scores together, and then dividing by the number of items. 

\(\displaystyle \frac{85\cdot 5+91}{6}\)

\(\displaystyle \frac{516}{6}\)

\(\displaystyle 86\)

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