Understanding Decimals and Place Values

Front

Decimal

Back

A number that includes a dot to show parts smaller than one.

Clues: A number like 3.14 or 0.75. Used to represent money, like $1.25.

Front

Expanded Notation

Back

Writing a number to show the value of each digit separately.

Clues: Breaking down a number into its individual parts. 345.67 can be written as 300 + 40 + 5 + 0.6 + 0.07.

Front

Hundreds/Hundredths

Back

Hundreds are large values, hundredths are small values.

Clues: The place value two spots to the left/right of the decimal point. In 123.45, 1 is in the hundreds place, and 5 is in the hundredths place.

Front

One-Tenth

Back

The first place to the right of the decimal point.

Clues: The first spot after the decimal point. In 7.3, 3 is in the one-tenth place.

Front

Place Value

Back

The value of a digit based on where it is in the number.

Clues: Each digit has a different value depending on its position. In 56.78, 5 is in the tens place, 6 is in the ones place, 7 is in the tenths place, and 8 is in the hundredths place.

Front

Ten Times

Back

Multiplying a number by 10.

Clues: Making a number ten times bigger. If you multiply 3 by 10, you get 30.

Front

Decimal Point

Back

The dot that separates the whole number part from the fractional part.

Clues: The dot that splits the whole number from the part less than one. In 12.34, the decimal point separates 12 (whole number) from 34 (fractional part).

Front

Number Line

Back

A straight line with numbers placed at equal intervals.

Clues: A line where numbers are spaced out evenly. A number line might show numbers from 0 to 10, with each number equally spaced apart.