Common Core: 1st Grade Math : Operations & Algebraic Thinking
Study concepts, example questions & explanations for Common Core: 1st Grade Math
All Common Core: 1st Grade Math Resources
Example Questions
Example Question #22 : Addition Within 20 To Solve Word Problems
For the school play, there are 
This is an addition problem because we want to know how many total parts there are when we put the singing and the talking parts together. When we put things together we are adding.
We can start at 
Example Question #23 : Addition Within 20 To Solve Word Problems
We ordered a large pizza and a medium pizza. The large pizza has 
This is an addition problem because we want to know how many total slices of pizza we have when we put the medium pizza slices together with the large pizza slices. When we put things together we are adding.
We can start at 
Example Question #24 : Addition Within 20 To Solve Word Problems
The pet store has 
This is an addition problem because we are putting the frogs in the two tanks together. When we put things together we are adding.
We can start at 
Example Question #831 : Operations & Algebraic Thinking
Tim’s favorite tree had 
This is a subtraction problem because the tree lost branches, so it will have less than what it started with.
We can start at 
Example Question #321 : Operations
Megan has 
This is a subtraction problem because Megan is giving some of her markers away, so she will have less than what she started with.
We can start at 
Example Question #3 : Subtraction Within 20 To Solve Word Problems
The toy panda weighs 
This is a subtraction problem because we are finding the difference in weight between the truck and the panda.
We can start at 
Example Question #4 : Subtraction Within 20 To Solve Word Problems
Jess has 
This is a subtraction problem because Jess has worn some of her shirts, so her total number of shirts in the drawer is decreasing.
We can start at 
Example Question #5 : Subtraction Within 20 To Solve Word Problems
Cassie picked 
This is a subtraction problem because Cassie gave some of her flowers away, so she will have less than what she started with.
We can start at 
Example Question #832 : Operations & Algebraic Thinking
Mark has 
This is a subtraction problem because Mark dropped some of his coins so he has less than what he started with.
We can start at 
Example Question #833 : Operations & Algebraic Thinking
Toby has 
This is a subtraction problem because Toby took toys out of the bin, so he is decreasing the number of toys in his bin.
We can start at 
All Common Core: 1st Grade Math Resources
