Math Worksheets Finding the Mean

Are you a math teacher or a parent looking to help your child practice finding the mean? Look no further! In order to reinforce the concept of finding the mean or average, worksheets can serve as effective tools for both teachers and parents. By providing structured practice problems, worksheets allow students to focus on the specific skill of finding the mean without any distractions.

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What is the mean of the numbers 12, 15, 18, and 21?

The mean of the numbers 12, 15, 18, and 21 is 16.5.

Suppose you have a data set with the numbers 5, 7, 9, and 11. What is the mean?

The mean (average) of the data set with the numbers 5, 7, 9, and 11 is 8.

Find the mean of the following numbers: 4, 4, 4, 4, 4.

The mean of the numbers 4, 4, 4, 4, and 4 is 4.

In a class of 25 students, the average score on a test is 85. What is the total sum of scores?

The total sum of scores on the test is 25 (number of students) multiplied by 85 (average score), which equals 2125.

A bakery sold 100 pastries in a week. The mean number of pastries sold per day is 20. How many days did the bakery operate?

The bakery operated for 5 days in a week to sell 100 pastries, as 100 pastries divided by the mean number of pastries sold per day (20) equals 5 days.

The mean weight of 5 boxes is 20 kg. If four of the boxes have weights of 15 kg, 18 kg, 20 kg, and 26 kg, what is the weight of the fifth box?

The weight of the fifth box can be calculated by finding the total weight of all 5 boxes (5 boxes * 20 kg = 100 kg) and subtracting the sum of the weights of the four known boxes (15 kg + 18 kg + 20 kg + 26 kg = 79 kg) from the total weight, resulting in the weight of the fifth box: 100 kg - 79 kg = 21 kg.

In a survey, people were asked how many hours they spend on social media daily. The mean response was 2.5 hours. If 100 people were surveyed and their total hours summed to 275, how many people spent more than 3 hours on social media?

To find out how many people spent more than 3 hours on social media, we first calculate the total hours spent by these individuals. Since the mean is 2.5 hours and the total hours is 275, the difference between them represents the extra hours spent by those who exceed the mean. Thus, 275 - (2.5 * 100) = 275 - 250 = 25 hours spent by individuals exceeding the mean. As each person spent on average 2.5 hours, the number of people who spent more than 3 hours can be found by dividing the total extra hours by the extra hours spent by these individuals. Hence, 25 / 0.5 = 50 people spent more than 3 hours on social media.

The mean height of five people is 68 inches. If four of them have heights of 70 inches, 72 inches, 63 inches, and 66 inches, what is the height of the fifth person?

To find the height of the fifth person, we can use the formula for the mean: mean = sum of all heights / number of people. Given that the mean height is 68 inches and there are five people, the sum of all their heights is 68 * 5 = 340 inches. The sum of the known heights (70 + 72 + 63 + 66) is 271 inches. The height of the fifth person can be found by subtracting the sum of the known heights from the total sum: 340 - 271 = 69 inches. Therefore, the height of the fifth person is 69 inches.

In a race, the mean time taken by 8 runners is 12 seconds. If seven of them took times of 10 seconds, 11 seconds, 12 seconds, 13 seconds, 11 seconds, 9 seconds, and 12 seconds, what was the time taken by the eighth runner?

The total time taken by the 8 runners is 8 x 12 = 96 seconds. The sum of the times taken by the first seven runners is 10 + 11 + 12 + 13 + 11 + 9 + 12 = 78 seconds. Therefore, the time taken by the eighth runner can be calculated by subtracting the sum of the times taken by the seven runners from the total time, which is 96 - 78 = 18 seconds. Thus, the eighth runner took 18 seconds to complete the race.

In a science experiment, the mean temperature recorded over 5 days was 25°C. If the recorded temperatures were 22°C, 24°C, 26°C, and 23°C, what was the temperature on the fifth day?

To find the temperature on the fifth day in the science experiment, we can calculate the sum of the temperatures for all 5 days which equals 120°C (25°C x 5 days). The sum of the temperatures for the first 4 days is 95°C (22°C + 24°C + 26°C + 23°C), therefore the temperature on the fifth day must be 25°C (120°C - 95°C).