Glossary
a fourthOne piece of a shape split into 4 pieces that are the same size.
A fourth, or a quarter, of the square is shaded.
a half
One piece of a shape split into 2 pieces that are the same size.
A half of the rectangle is shaded.
category
data
Example: If you have a box of colored pencils, then the lengths and colors of each of the pencils are data about the pencils in the box.
difference
estimate
To find a value that is close to the correct value.
fourths
The pieces created when a shape is split into 4 pieces that are the same size.
The circle is split into fourths, or quarters.
greater than
63 is greater than 32.
63 > 32
half-past
This clock shows half-past 4 o’clock or 4:30.
halves
The pieces created when a shape is split into 2 pieces that are the same size.
The circle is split into halves.
length
The measure of how long an object is in same-size units with no gaps or overlaps.
Example: The length of this sneaker is 15 cubes long.
![Shoe. Underneath from toe to heel, 15 connecting cubes all the same size in a tower.](https://cms-im.s3.amazonaws.com/u74t51ghb03x0b44tyr8iz09ccma?response-content-disposition=inline%3B%20filename%3D%22high%20top-15%20cubes.png%22%3B%20filename%2A%3DUTF-8%27%27high%2520top-15%2520cubes.png&response-content-type=image%2Fpng&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAXQCCIHWF3XOEFOW4%2F20240630%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20240630T162408Z&X-Amz-Expires=604800&X-Amz-SignedHeaders=host&X-Amz-Signature=b8a961edd7a787ea315b7fd1536fe09de21d471d64f74b2b77724b52e324d1cc)
less than
32 is less than 63.
32 < 63
o’clock
The clock shows 2 o’clock or 2:00.
sum
survey
teen number
A number with 1 ten and between 1 and 9 ones.
Example:
Fifteen is 1 ten and 5 ones.
two-digit number