COUNTDOWN to Math STAAR

Front

What is half of $40?

Back

$20

Front

If Ulric saves half of his money, how much does he have left to spend?

Back

$20

Front

If Ulric spends the same amount of money over 4 days, how do you find out how much he spends each day?

Back

Divide the total amount he has left ($20) by 4.

Front

What is the formula to find the amount spent each day?

Back

Amount spent each day = Total amount / Number of days

Front

What is an angle?

Back

An angle is formed by two rays that share a common endpoint.

Front

What tool do you use to measure angles?

Back

A protractor.

Front

If an angle measures 50°, what does that mean?

Back

It means the angle is 50 degrees wide.

Front

What is a ray in geometry?

Back

A ray is a part of a line that starts at a point and extends infinitely in one direction.

Front

What is estimation in mathematics?

Back

Estimation is finding a number that is close enough to the right answer, usually with some thought.

Front

If a librarian estimates there are 44,000 books, what does that mean?

Back

It means the librarian believes the number of books is around 44,000, but it may not be exact.