7.6 Extra or Missing Information

Front

What does it mean to have extra information in a problem?

Back

Extra information is information that is not needed to solve the problem.

Front

What does it mean to have missing information in a problem?

Back

Missing information is information that is needed to solve the problem but is not provided.

Front

If Bert bought 4 items but we don't know the price, can we find out how much change he will get back?

Back

No, we cannot find out how much change he will get back because we need the price of the items.

Front

How many chicks hatched if 4 chicks hatched every day for 5 days?

Back

20 chicks hatched in total.

Front

If Mrs. Friedman bought 4 boxes of chalk at $2 each, how much did she spend?

Back

She spent $8 on the 4 boxes of chalk.

Front

What is the length of each piece if a 12-foot board is cut into 4 equal parts?

Back

Each piece will be 3 feet long.

Front

If 4 friends bought 24 computer games equally, how many games did each friend buy?

Back

Each friend bought 6 games.

Front

What is a key step in solving a problem with extra or missing information?

Back

Identify what information is needed to solve the problem.

Front

Why is it important to determine if information is extra or missing?

Back

It helps to know if you can solve the problem or if you need more information.

Front

What is an example of a problem with missing information?

Back

If a problem asks for the total cost but does not provide the price of each item.