1.6 Length Measurements Within 120 Units
- Students measure length and count up to 120 length units. They solve addition and subtraction story problems with unknowns in all positions.
Section A Goals
- Compare the lengths of objects indirectly.
- Order objects by length.
Section B Goals
- Count groups of up to 120 objects and write a number to represent them.
- Lay length units end-to-end with no gaps or overlaps and count the units to determine length.
Section C Goals
- Solve addition and subtraction story problems with unknowns in all positions.
- categoryA label that tells how objects in a group are alike.
- dataInformation about the things or people in a group.
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.
- differenceThe result when one number is subtracted from another.
To find a value that is close to the correct value.
- greater than
63 is greater than 32.
63 > 32
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.
- less than
32 is less than 63.
32 < 63
- sumThe total when two or more numbers are added.
- surveyA way to collect data using a group of people answering the same question.
- teen number
A number with 1 ten and between 1 and 9 ones.
Fifteen is 1 ten and 5 ones.
- two-digit number