Understanding the Mean
A Grade 3 math worksheet to help students understand and calculate the mean (average) of a small set of numbers.
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Understanding the Mean
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The mean is another word for average. To find the mean of a set of numbers, you add all the numbers together and then divide by how many numbers there are. Follow the instructions for each section.
Add the numbers in each set. This is the first step to finding the mean.
1. 3, 5, 7 Sum:
2. 10, 20, 30 Sum:
3. 2, 4, 6, 8 Sum:
How many numbers are in each set?
1. 4, 8, 12 Count:
2. 1, 2, 3, 4, 5 Count:
3. 15, 25 Count:
1. What does 'mean' tell us about a set of numbers?
The biggest number
The smallest number
The average number
How many numbers there are
Find the mean for each set of numbers. Show your work.
1. Numbers: 2, 4, 6
Work:
Mean:
2. Numbers: 5, 5, 5, 5
Work:
Mean:
Look at the bar graph below. It shows the number of books read by four friends in a month. Find the mean number of books read.
Work:
Mean number of books: