Unknown Addends

Front

What is an addend?

Back

An addend is a number that is added to another number in an addition problem.

Front

What does it mean to find a missing addend?

Back

Finding a missing addend means determining the number that needs to be added to another number to reach a total.

Front

If 3 + ___ = 16, what is the missing addend?

Back

13

Front

If 8 + ___ = 15, what is the missing addend?

Back

7

Front

If 3 + ___ = 15, what is the missing addend?

Back

12

Front

If 14 + ___ = 19, what is the missing addend?

Back

5

Front

If 12 + ___ = 19, what is the missing addend?

Back

7

Front

What is the sum of two addends?

Back

The sum is the total amount you get when you add two or more numbers together.

Front

How can you check if your answer for a missing addend is correct?

Back

You can check by adding the missing addend to the known addend and seeing if it equals the total.

Front

What is the equation for finding a missing addend?

Back

The equation is: Known Addend + Missing Addend = Total.