Change Unknown/Start Unknown Word Problems

Front

What is a change unknown word problem?

Back

A problem where you need to find out how much something changed, but you don't know the starting amount.

Front

What is a start unknown word problem?

Back

A problem where you need to find out the starting amount, but you know how much it changed.

Front

If you have 5 pencils and you get 2 more, how many do you have now?

Back

7 pencils.

Front

If you have 10 birds and 3 fly away, how many birds are left?

Back

7 birds.

Front

If you have 8 grapes and you eat 3, how many grapes do you have left?

Back

5 grapes.

Front

If you have 6 cookies and you give away 2, how many cookies do you have now?

Back

4 cookies.

Front

If you start with an unknown number of candies and you get 5 more, and now you have 10, how many did you start with?

Back

5 candies.

Front

If you have 12 apples and you give away some, and now you have 8, how many did you give away?

Back

4 apples.

Front

What does 'unknown' mean in a word problem?

Back

It means we don't know that number yet.

Front

How can we find the unknown number in a word problem?

Back

By using addition or subtraction to solve the problem.