Real Numbers Test Review

Front

What is scientific notation?

Back

A way to express very large or very small numbers using powers of ten. For example, 6,700,000 can be written as 6.7 × 10⁶.

Front

How do you convert a number to scientific notation?

Back

Move the decimal point in the number until only one non-zero digit remains to the left. Count the number of places moved; this becomes the exponent of 10.

Front

What is the scientific notation for 0.00185?

Back

1.85 × 10⁻³.

Front

What is an integer?

Back

An integer is a whole number that can be positive, negative, or zero, but cannot have a decimal or fractional part.

Front

Is -5.5 an integer? Why or why not?

Back

No, because integers do not have decimals.

Front

What is a rational number?

Back

A rational number is any number that can be expressed as a fraction or ratio of two integers.

Front

Is 5.676677666777... a rational number? Why or why not?

Back

No, because it is a non-repeating decimal.

Front

What is the difference between a repeating decimal and a non-repeating decimal?

Back

A repeating decimal has a digit or group of digits that repeat indefinitely, while a non-repeating decimal does not.

Front

How do you order numbers from least to greatest?

Back

Compare the values of the numbers and arrange them in ascending order.

Front

What is the decimal equivalent of 141%?

Back

1.41 (to convert a percentage to a decimal, divide by 100).