Write a missing addend addition sentence to help solve 78-49.explain how you would use it.

Since it is not an equation (having an equal sign), it cannot be solved. Have you omitted some information?

To write a missing addend addition sentence to solve 78 - 49, we need to determine what number we need to add to 49 in order to get 78. This missing addend will complete the addition sentence.

We can start by subtracting 49 from 78 to find the missing addend.

78 - 49 = 29

This means that 29 is the missing addend. To write the missing addend addition sentence, we can use the following format:

49 + ? = 78

By placing the missing addend in the question mark, the addition sentence becomes:
49 + 29 = 78

Now, if we add the missing addend (29) to the known value (49), we get the total sum of 78. So, by using this missing addend addition sentence, we can solve the subtraction problem 78 - 49 by figuring out what number needs to be added to 49 to equal 78.