K.5 Composing and Decomposing Numbers to 10
Unit Goals
- Students compose and decompose numbers within 10.
Section A Goals
- Compose and decompose numbers up to 9 in more than 1 way.
- Write expressions to represent decompositions.
Section B Goals
- Solve Put Together, Total Unknown, Put Together/Take Apart, Both Addends Unknown, Add To, Result Unknown, and Take From, Result Unknown story problems.
Section C Goals
- For any number from 1 to 9, find the number that makes 10 when added to the given number.
Glossary Entries
- above
- add
\(4 + 3\)
Four plus three
- below
- beside
- circle
- equation
\(10 = 6 + 4\)
\(5 - 2 = 3\)
- expression
\(6 + 4\)
\(3 - 3\) - fewer
- less
3 is less than 9
- longer
The straw on the top is longer than the straw on the bottom.
- more
- next to
- number writing reference
1
one
2
two
3
three
4
four
5
five
6
six
7
seven
8
eight
9
nine
10
ten
- rectangle
- shorter
The straw on the bottom is shorter than the straw on the top.
- subtract
\(5 - 2\)
Five minus two
- triangle
