Lesson: Solving Subtraction Story Problems with the Unknown in Any Position

In this lesson, we will learn how to find the missing number in subtraction story problems describing situations of “taking from” and “taking apart.”

Question Video: Solving Word Problems with Numbers up to 20 by Finding the Unknown Addend

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Q1:

A child had 7 marbles in their pocket, but 4 fell out. How many marbles are left?

Q2:

There are 8 children on a bus. 3 are girls. How many are boys?

Q3:

There were 11 flies. After a frog ate some of them, there were 8 flies left. How many flies were eaten?

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