Intro to Algebra Midterm Exam Extra Credit

Front

What is the formula for the area of a square?

Back

Area = side × side (A = s²)

Front

If the area of a square is 100 cm², what is the length of one side?

Back

10 cm (since 10 cm × 10 cm = 100 cm²)

Front

What is the formula for the perimeter of a square?

Back

Perimeter = 4 × side (P = 4s)

Front

If the side length of a square is 10 cm, what is its perimeter?

Back

40 cm (P = 4 × 10 cm = 40 cm)

Front

What does |x| represent in mathematics?

Back

The absolute value of x, which is the distance of x from 0 on the number line.

Front

What is the absolute value of -6?

Back

6 (since |-6| = 6)

Front

How do you compare absolute values?

Back

Compare the numbers without their signs; for example, |−6| = |6|.

Front

What is a fraction?

Back

A way to represent a part of a whole, expressed as a/b where a is the numerator and b is the denominator.

Front

If Sharon has 12 cups of flour and each batch requires 2/3 cups, how many batches can she make?

Back

18 batches (12 ÷ (2/3) = 12 × (3/2) = 18)

Front

What is the process to convert a mixed number to an improper fraction?

Back

Multiply the whole number by the denominator, add the numerator, and place over the original denominator.