Addition and Subtraction Within 20 to Solve Word Problems: CCSS.MATH.CONTENT.1.OA.A.1 - 1st Grade Math
Card 0 of 4
A large pizza has 
slices. If we eat 
slices, how many will be left?
A large pizza has
This is a subtraction problem because we want to know how many slices will be left after we eat some. Since we are eating slices, or taking slices away, we will have less than what we started with.
We can start at 
and count back 
.
This is a subtraction problem because we want to know how many slices will be left after we eat some. Since we are eating slices, or taking slices away, we will have less than what we started with.
We can start at
Compare your answer with the correct one above
A large pizza has slices. If we eat slices, how many will be left?
A large pizza has
This is a subtraction problem because we want to know how many slices will be left after we eat some. Since we are eating slices, or taking slices away, we will have less than what we started with.
We can start at and count back .
This is a subtraction problem because we want to know how many slices will be left after we eat some. Since we are eating slices, or taking slices away, we will have less than what we started with.
We can start at
Compare your answer with the correct one above
A large pizza has slices. If we eat slices, how many will be left?
A large pizza has
This is a subtraction problem because we want to know how many slices will be left after we eat some. Since we are eating slices, or taking slices away, we will have less than what we started with.
We can start at and count back .
This is a subtraction problem because we want to know how many slices will be left after we eat some. Since we are eating slices, or taking slices away, we will have less than what we started with.
We can start at
Compare your answer with the correct one above
A large pizza has slices. If we eat slices, how many will be left?
A large pizza has
This is a subtraction problem because we want to know how many slices will be left after we eat some. Since we are eating slices, or taking slices away, we will have less than what we started with.
We can start at and count back .
This is a subtraction problem because we want to know how many slices will be left after we eat some. Since we are eating slices, or taking slices away, we will have less than what we started with.
We can start at
Compare your answer with the correct one above