Wyoming Math K.OA.2
The Standard
Solve word problems using objects and drawings to find sums up to 10 and differences within 10.
2023 Wyoming Mathematics Content and Performance Standards · Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from.
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students listen to a short story and decide whether objects are joining or being taken away. They use counters or drawings to find the answer, with numbers up to 10.
What Mastery Looks Like
- A student can show what happens in the story with counters or a drawing. They count the result and explain why they added or took away.
Common Misconceptions
- Some students count the objects that left along with the ones still there. Others add for every story, even when objects are taken away.
How to Assess It
- Give an exit slip with two stories: '4 ducks are in a pond. 3 more swim in. How many ducks?' and '7 ducks are in a pond. 2 swim away. How many remain?' Ask students to draw each story and circle each answer.
Lesson moves
Ways to Teach It
Give each child 8 counters and say, 'Eight frogs sit on a log. Three jump away. Show how many stay.'
Draw 4 birds on a fence and 2 joining them, then ask partners, 'What changed, and how do you know?'
Play story-card match: students pair a picture of 6 apples with 2 taken away to a matching counter model and answer.
At snack, put 4 crackers on a plate, add 3 more, and ask children to draw and count the total.
Free download
Printable K.OA.2 Worksheet
A ready-to-print activity worksheet aligned to K.OA.2, with an answer key for the teacher on its own page. No account needed.
PDF, US Letter, prints cleanly in black and white.
Download the worksheetKeep exploring
Related Standards
- 2.NBT.7
Add and subtract within 1,000, using concrete models or drawings and strategies based on place value, properties of addition, and/or the relationship between ad...
- 1.OA.1
Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, wit...
- 1.OA.6
Add and subtract within 20, demonstrating fluency in addition and subtraction within 10. Use strategies such as counting on; making ten using the relationship b...
- 2.OA.1
Use addition and subtraction within 100 to solve one- and two-step word problems involving situations of adding to, taking from, putting together, taking apart,...
Turn this exact standard into a lesson
Grade, subject, topic, and the complete standard are prefilled. Create one free, no account needed.
Also for this standard:Make a WorksheetMake a QuizMake a Sub Lesson