Kindergarten Operations and Algebraic Thinking from Alabama Deconstructed Standards
Kinder - Operations and Algebraic Thinking
Summary of Skills - Understand addition as putting together and adding to, and understand subtraction as
taking apart and taking from.
K-OA1 - Represent addition and subtraction with objects, fingers, mental images, drawings, sounds (e.g.,
claps), acting out situations, verbal explanations, expressions, or equations. (Drawings need not show details,
but should show the mathematics in the problem. This applies wherever drawings are mentioned in the
Standards.)
Skills
 Define addition as combining groups of objects.
 Define subtraction as separating groups of objects.
 Represent numbers with objects or drawings.
 Separate sets with nine or fewer objects.
 Combine objects to form sets up to nine.
K-OA2 - Solve addition and subtraction word problems, and add and subtract within 10, e.g., by using objects
or drawings to represent the problem.
Skills
 Understand key words in addition and subtraction word problems.
 Examples: all together, how many more, how many are left, in all
 Represent numbers with objects or drawings.
 Separate sets with nine or fewer objects.
 Combine objects to form sets up to nine.
K-OA3 - Decompose numbers less than or equal to 10 into pairs in more than one way, e.g., by using objects or
drawings, and record each decomposition by a drawing or equation (e.g., 5 = 2 + 3 and 5 = 4 + 1).
Skills
 Identify plus, minus, and equal signs.
 Match numerals to objects or drawings.
 Identify numerals 1 to 10.
 Count 0 to 10.
K-OA4 - For any number from 1 to 9, find the number that makes 10 when added to the given number, e.g., by
using objects or drawings, and record the answer with a drawing or equation.
Skills
 Write numerals from 0 to 10.
 Represent a given numeral1 to 10 with objects or drawings.
 Count forward from a given number 1 to 10.
 Model joining sets of objects to total 10.
K-OA5 - Fluently add and subtract within 5.
Skills
 Decompose numbers up to 5 using objects or drawings.
 Compose numbers up to 5using objects or drawings.
 Count backward from 5.
 Count forward to 5.