SSAT Middle Level Math : Range

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

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Example Questions

Example Question #71 : Statistics & Probability

The difference between 2996 and 4515 is closest to 

Possible Answers:

\(\displaystyle 2500\)

\(\displaystyle 3000\)

\(\displaystyle 2000\)

\(\displaystyle 1000\)

\(\displaystyle 1500\)

Correct answer:

\(\displaystyle 1500\)

Explanation:

Round 2996 up to 3000 and 4515 down to 4500.  The difference between 4500 and 3000 is 1500.

Example Question #1 : Find Range

Find the range of this set of numbers:

89, 54, 76, 89, 94.

Possible Answers:

\(\displaystyle 94\)

\(\displaystyle 54\)

\(\displaystyle 40\)

\(\displaystyle 78\)

\(\displaystyle 89\)

Correct answer:

\(\displaystyle 40\)

Explanation:

First, order the numbers from least to greatest, then find the difference of the highest number and the lowest number.

 \(\displaystyle 54, 76, 89, 89, 94\)

\(\displaystyle 94-54=40\)

Answer: The range of this set of numbers is 40.

Example Question #1 : Find Range

Find the range of this set of numbers:

525, 436, 142, 213, 641.

Possible Answers:

\(\displaystyle 428\)

\(\displaystyle 436\)

\(\displaystyle 391\)

\(\displaystyle 499\)

Correct answer:

\(\displaystyle 499\)

Explanation:

First, order the numbers from least to greatest. Then, find the difference between the largest and the smallest number.

\(\displaystyle 142, 213, 436, 525, 641.\)

\(\displaystyle 641-142=499\)

Answer: The range is \(\displaystyle 499.\)

Example Question #1742 : Grade 6

What is the range of the set of numbers \(\displaystyle 45\)\(\displaystyle 6\)\(\displaystyle 32\)\(\displaystyle 11\)\(\displaystyle 2\)?

Possible Answers:

\(\displaystyle 30\)

\(\displaystyle 43\)

\(\displaystyle 26\)

\(\displaystyle 34\)

\(\displaystyle 19.2\)

Correct answer:

\(\displaystyle 43\)

Explanation:

The range of a set of numbers is the difference between the largest and smallest numbers. In this set, \(\displaystyle 45\) is the largest number and \(\displaystyle 2\) is the smallest number. The range, or difference, between these two numbers, is \(\displaystyle 43\).

Example Question #2 : Find Range

Find the range of this set of numbers:

\(\displaystyle 546, 321, 789, 601, 751\)

Possible Answers:

\(\displaystyle 468\)

\(\displaystyle 601\)

\(\displaystyle 430\)

\(\displaystyle 602\)

Correct answer:

\(\displaystyle 468\)

Explanation:

First order the numbers in order from least to greatest:

\(\displaystyle 321, 546, 601, 751, 789\)

Then, find the difference of the largest and smallest number in the set:

\(\displaystyle 789-321=468.\)

Answer: The range is \(\displaystyle 468\)

Example Question #1 : Range

What is the range of the set of numbers:

 \(\displaystyle 106, 94, 95, 89, 102\) 

Possible Answers:

\(\displaystyle 89\)

\(\displaystyle 17\)

\(\displaystyle 15\)

\(\displaystyle 106\)

\(\displaystyle 16\)

Correct answer:

\(\displaystyle 17\)

Explanation:

The ragne of a set of numbers is the difference between the largest and smallest numbers. In this set, \(\displaystyle 106\) is the largest number and \(\displaystyle 89\) is the smallest number. The range, or difference, between these two numbers, is \(\displaystyle 106-89=17\).

Example Question #1 : Find Range

What is the range of the following data set?

\(\displaystyle \small 1321, 1472, 1731, 1137, 1820\)

Possible Answers:

\(\displaystyle \small 499\)

\(\displaystyle \small 1496\)

\(\displaystyle 544\)

\(\displaystyle \small 683\)

\(\displaystyle \small 1472\)

Correct answer:

\(\displaystyle \small 683\)

Explanation:

The range of a data set is equal to the difference between the largest \(\displaystyle \small (1820)\) and the smallest \(\displaystyle \small (1137)\) numbers.

\(\displaystyle \small range=1820-1137=683\)

Example Question #2 : Find Range

Find the range of this set of numbers:

\(\displaystyle 57,59,51,53,54\)

Possible Answers:

\(\displaystyle 57\)

\(\displaystyle 7\)

\(\displaystyle 8\)

\(\displaystyle 54\)

Correct answer:

\(\displaystyle 8\)

Explanation:

First order the numbers from least to greatest:

\(\displaystyle 51, 53, 54, 57, 59\)

Then subtract the smallest number from the largest number:

\(\displaystyle 59-51=8\)

Answer: \(\displaystyle 8\)

Example Question #3 : Find Range

Given the following set of numbers, find the range. 

\(\displaystyle \textup{3, 8, 12, -5, 18, -7, 12, 2, 9}\)

Possible Answers:

\(\displaystyle -7\)

\(\displaystyle 18\)

\(\displaystyle 25\)

\(\displaystyle 12\)

Correct answer:

\(\displaystyle 25\)

Explanation:

In order to find the range for a set of data, take the largest number and subtract the smallest number. 

In this case, the largest number is \(\displaystyle 18\) and the smallest number is \(\displaystyle -7\)

Remember that when we subtract a negative, we are actually adding the absolute value of the numbers: 

Therefore:

\(\displaystyle 18 - (-7)\) is the same as \(\displaystyle 18 + 7\) 

\(\displaystyle 18+7=25\)

Example Question #2 : Range

Use the following data set to answer the question:

\(\displaystyle 4, 8, 6, 10, 4, 9, 5, 2, 4\)

Find the range.

Possible Answers:

\(\displaystyle 8\)

\(\displaystyle 6\)

\(\displaystyle 5\)

\(\displaystyle 10\)

\(\displaystyle 4\)

Correct answer:

\(\displaystyle 8\)

Explanation:

To find the range, we will find the smallest number and the largest number.  Then, we will find the difference of those two numbers.  

So, given the set

\(\displaystyle 4, 8, 6, 10, 4, 9, 5, 2, 4\)

we can see the smallest number is 2 and the largest number is 10.  Now, we will find the difference.  We get

\(\displaystyle 10-2=8\)

Therefore, the range of the data set is 8.

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