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Kindergarten Math
12. K.OA.A.5
12.2 Adding one up to 5
Adding One Up to 5
Discover the easy way to add one more to any number up to 5, using counting, objects, and pictures kids can see and touch.
What You'll Learn
Count on from a starting number to find one more, landing on the next number in the counting sequence
Use objects, fingers, or pictures to model a sum such as \( 3 + 1 = 4 \)
Recognize the pattern that adding one to any number up to 5 always gives the very next number
Match a picture of grouped objects to the correct addition sentence
Write simple number sentences like \( 4 + 1 = 5 \) to record what was counted
Compare adding one with taking away one to strengthen overall number sense
What You'll Practice
1
Counting animals and objects in visual groups
2
Selecting groups that have one more than another
3
Finding the number that is one more than a given amount
Why This Matters
Adding one is the foundation of all addition and counting skills you'll build in math. Mastering this concept helps you understand number patterns, solve simple word problems, and prepares you for adding larger numbers with confidence.
This Unit Includes
1 Video lesson
Practice exercises
Learning resources
Skills
Counting
Addition
Number Sense
Comparing Quantities
One-to-One Correspondence

OH Curriculum Aligned