Arithmetic Review Test Part 2

Front

What is the formula to calculate the percentage of correct answers on a test?

Back

Percentage = (Number of Correct Answers / Total Questions) × 100

Front

How do you find the number of correct answers if you know the percentage and total questions?

Back

Number of Correct Answers = (Percentage / 100) × Total Questions

Front

What is the place value of the digit 7 in the number 456.007?

Back

The digit 7 is in the thousandths place.

Front

What is a reciprocal in mathematics?

Back

The reciprocal of a number is 1 divided by that number. For a fraction, it is obtained by swapping the numerator and denominator.

Front

What is the reciprocal of 3/8?

Back

The reciprocal of 3/8 is 8/3.

Front

How do you convert a percentage to a decimal?

Back

To convert a percentage to a decimal, divide the percentage by 100.

Front

What is 4.3% as a decimal?

Back

4.3% as a decimal is 0.043.

Front

How do you set up a proportion to solve for an unknown quantity?

Back

Set up a proportion by creating a ratio that compares two quantities, then cross-multiply to solve for the unknown.

Front

If 13 out of 20 homes have a personal computer, how do you find the expected number of computers in 60 homes?

Back

Use a proportion: (13/20) = (x/60), where x is the expected number of computers.

Front

What is the expected number of computers in 60 homes if 13 out of 20 have one?

Back

The expected number of computers is 39.