Fair Game Rev. pg. 157

Front

What is the result of 82 x 20?

Back

1640

Front

What is 1/2 x 26?

Back

13

Front

What is 1/2 x 236?

Back

118

Front

What is 16 x 30?

Back

480

Front

What type of angle is angle B if it is described as obtuse?

Back

An obtuse angle is an angle that is greater than 90 degrees but less than 180 degrees.

Front

What is mental math?

Back

Mental math refers to performing calculations in your head without the use of calculators or paper.

Front

How do you multiply a number by 20 using mental math?

Back

To multiply by 20, you can multiply the number by 2 and then add a zero to the result.

Front

What is the definition of an acute angle?

Back

An acute angle is an angle that is less than 90 degrees.

Front

What is the definition of a right angle?

Back

A right angle is an angle that is exactly 90 degrees.

Front

What is the definition of an obtuse angle?

Back

An obtuse angle is an angle that is greater than 90 degrees but less than 180 degrees.