Decimals and Place Values

A place-value chart is used to find the value of a number. Look at the digits and the position of each digit.

Knowing place-value is useful when comparing decimal numbers. Maram is asked to list 18.4, 17.6, and 21.5 in order from greatest to least.

STEP 1: Maram compares the first two numbers. She starts at the left. Both numbers have the same digit 1 in the tens place. STEP 2: Maram compares the third number to the greatest number so far, the first number.

Read the explanation below to learn more about decimals and place values.

Decimals and Place Values