# steck 4 math unit 2

## 13 terms · EM math vocabulary grade 4 unit 2

### ballpark estimate

You use a ballpark estimate to check the reasonableness of your answer. It helps you answer the questions "Does my answer make sense?"

### bar graph

a graph that uses horizontal or vertical bars to display data

### counting number

natural number, any positive integer
7, 59, 1,204 are examples of counting numbers

### digit

Any one of the ten symbols 0, 1, 2, 3, 4, 5, 6, 7, 8, or 9 used to write numbers

### equivalent name

different ways of naming the same number
example: 3 + 7, 100 - 90, 10 x 10 are all equivalent names for 10

### line plot

a sketch of data in which check marks, Xs, or other symbols above a labeled line show the frequency of each value.

### maximum

The largest amount; the greatest number in a set of data.

### median

The middle number in a data set when the data are listed in order from smallest to largest. If there is an even number of data points, the median is the mean of the two middle values.

### minimum

the smallest number in a set of data

### mode

The value or values that occurs most often in a set of data.

### range

the difference between the maximum and and minimum in a set of data.

### tally chart

A chart that uses marks, called tally marks, to show how many times each value appears in a set of data.

### Flickr Creative Commons Images

Some images used in this set are licensed under the Creative Commons through Flickr.com. Click to see the original works with their full license.