Decimals and expanded notation

Front

What is a decimal?

Back

A decimal is a number that includes a decimal point, which separates the whole number part from the fractional part.

Front

What does the digit 7 represent in the number 47.98?

Back

(7 x 1) dollars, because it is in the ones place.

Front

What is expanded notation?

Back

Expanded notation is a way to write numbers that shows the value of each digit. For example, 345 can be written as (3 x 100) + (4 x 10) + (5 x 1).

Front

In the number 1,382,097.45, what is the value of the digit 8?

Back

(8 x 10,000) because it is in the ten-thousands place.

Front

What place value is the digit 6 in the number 3.46?

Back

Hundredths place.

Front

How do you find the value of a digit in a decimal?

Back

Multiply the digit by its place value. For example, in 0.56, the value of 5 is (5 x 0.1).

Front

What is the value of the digit 2 in the number 200,490,593.07?

Back

(2 x 100,000) because it is in the hundred-thousands place.

Front

What is the value of the digit 5 in the number 14,621.85?

Back

(5 x 0.01) because it is in the hundredths place.

Front

What does the digit 4 represent in the number 4,209,513.87?

Back

(4 x 1,000,000) because it is in the millions place.

Front

What is the value of the digit 3 in the number 3.46?

Back

(3 x 1) because it is in the ones place.