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Understanding Addition

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Understanding Addition

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About these worksheets

These worksheets introduce students to the foundational concepts of addition. Activities include matching pictures to addition sentences, identifying number pairs that make 10, breaking apart two-digit numbers into tens and ones, and counting up and down within 20. Designed primarily for kindergarten and first grade, these resources help young learners connect visual representations to number sentences and build early number sense before moving on to traditional addition problems.

Search for a Worksheet - Statistics worksheet

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Statistics

Find the median of a set of numbers by putting the data in order.
Find the range by subtracting the smallest value from the largest value.
Identify the lower quartile (Q1) and upper quartile (Q3) and use them to find the interquartile range (IQR).
Calculate the mean absolute deviation (MAD) to describe how spread out the data is from the mean.

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Search for a Worksheet - Creating Box Plots worksheet

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Creating Box Plots

6sp4

Put a set of numbers in order so you can find the middle and the quartiles.
Find the five-number summary (minimum, Q1, median, Q3, maximum) for a data set.
Draw a box plot on a number line using the five-number summary.
Use a box plot to describe how spread out the data is and where most values fall.

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Search for a Worksheet - Distributing Line Plots Values worksheet

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Distributing Line Plots Values

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Read a line plot and tell how many data points are at each fraction measurement.
Add up fractional measurements from a line plot to find the total amount.
Split the total from a line plot into equal shares and figure out how much each share gets.
Use the data on a line plot to answer questions about how the measurements are distributed.

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Search for a Worksheet - Examining Data Sets worksheet

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Examining Data Sets

6sp5c

Find the mean (average) of a set of numbers.
Find the median by putting the numbers in order and locating the middle value.
Find the interquartile range (IQR) to describe how spread out the middle half of the data is.
Find the mean absolute deviation (MAD) to describe how far values typically are from the mean.

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Search for a Worksheet - Examining Samples worksheet

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Examining Samples

7sp1

Decide whether a sample is likely to represent a whole population fairly.
Spot sources of bias in how data is collected, like who was asked or how people were chosen.
Explain why random sampling usually gives more reliable information than picking people conveniently.
Use information from a sample to make a reasonable guess about what might be true for the full population.

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Search for a Worksheet - Finding Mean worksheet

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Finding Mean

6sp5c

Find the mean (average) of a group of numbers by adding them up and dividing by how many numbers there are.
Keep track of the total sum accurately when adding several numbers together.
Use division to share the total equally across the data values to get the average.

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Search for a Worksheet - Finding Median worksheet

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Finding Median

6sp5c

Practice putting a list of numbers in order from least to greatest.
Find the median by picking the middle number when there is an odd amount of data.
Find the median when there is an even amount of data by averaging the two middle numbers.

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Search for a Worksheet - Finding Mode worksheet

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Finding Mode

6sp5c

Find the number that shows up most often in a list of numbers.
Count how many times each number appears to compare their frequencies.
Handle sets where there is more than one mode or no mode.

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Search for a Worksheet - Finding Quartiles worksheet

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Finding Quartiles

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Put a list of numbers in order from least to greatest before analyzing it.
Find the median (Q2) of a data set.
Find the first quartile (Q1) and third quartile (Q3) by taking the medians of the lower and upper halves of the data.
Use quartiles to describe how spread out the data is, including the interquartile range (IQR).

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Search for a Worksheet - Finding Range worksheet

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Finding Range

6sp5c

Find the range of a group of numbers by subtracting the smallest value from the largest value.
Identify the minimum and maximum values in a data set, even when the numbers are not in order.
Use the range to describe how spread out a set of data is.

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Search for a Worksheet - Finding Statistical Questions worksheet

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Finding Statistical Questions

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Decide whether a question needs data from a group of people or things to answer it.
Tell the difference between questions with one fixed answer and questions that can have many different answers.
Look for clues that a question expects variation, like asking about a population, a sample, or a range of results.
Explain why a question is or is not statistical using simple reasoning.

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Search for a Worksheet - Identifying Populations and Samples worksheet

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Identifying Populations and Samples

7sp1

Tell the difference between a population (the whole group) and a sample (part of the group).
Spot when a sample is only a small part of the population and may not represent everyone.
Use the words population and sample correctly when talking about data.

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