Common Core: 1st Grade Math : Adding and Subtracting Within 20
Study concepts, example questions & explanations for Common Core: 1st Grade Math
All Common Core: 1st Grade Math Resources
Example Questions
Example Question #2151 : Operations
To add we count up. Start at 
Example Question #2152 : Operations
To add we count up. Start at 
Example Question #1 : Addition Within 20 To Solve Word Problems
Molly has 
This is an addition problem because Molly and Natalie are putting their pencils together, and they will have more once they put all the pencils together.
We can start at 
Example Question #2 : Addition Within 20 To Solve Word Problems
Tracy picked 
This is an addition problem because Tracy has two groups of strawberries that she is putting together into one group. When you put things together you are adding.
We can start at 
Example Question #411 : Adding And Subtracting Within 20
Zack ate 
This is an addition problem because we want to know the total number of pieces of chocolate that Zack ate, we are putting the pieces together that he had at lunch and after dinner. When we put things together we are adding.
We can start at 
Example Question #2 : Addition Within 20 To Solve Word Problems
The toy store has 
This is an addition problem because we are putting the red bals and the black balls together. When we put things together we are adding.
We can start at 
Example Question #1 : Addition Within 20 To Solve Word Problems
Lucy is packing a bag for a trip. So far she has 
This is an addition problem because we are putting the shirts and the shorts together. When we put things together we are adding.
We can start at 
Example Question #2 : Addition Within 20 To Solve Word Problems
Jeff needs to collect leaves for a school project. He picked up 
This is an addition problem because we are putting the leaves that Jeff collected in the front yard together with the leaves he collected in the backyard. When we put things together we are adding.
We can start at 
Example Question #1 : Addition Within 20 To Solve Word Problems
Tom and Tim both have piggy banks in their rooms. Tom has 
This is an addition problem because Tim and Tom are putting their coins together. When we put things together we are adding.
We can start at 
Example Question #8 : Addition Within 20 To Solve Word Problems
A furniture store has 
This is an addition problem because we are putting the table and chairs together. When we put things together we are adding.
We can start at 
All Common Core: 1st Grade Math Resources
