Math Whiteboard Notes: Place Value and Decimals

Flashcards covering place value, number comparison, operations with decimals, and key vocabulary terms from the classroom whiteboard notes.

Place Value

The numerical value that a digit has based on its position in a number.

Number Expression

A mathematical phrase that can contain numbers, operators, and symbols.

Operations with Decimals

Arithmetic processes such as addition, subtraction, multiplication, and division performed using decimal numbers.

Convert Number Between Systems

The process of converting a numerical representation from one system or base to another.

Number Comparison

Determining whether one number is greater than, less than, or equal to another number.

Thursday, October 1st, 2026

The date written at the top of the classroom whiteboard lecture notes.

Product

The mathematical result obtained by multiplying two or more numbers.

Factor

A number that divides another number evenly without leaving a remainder.

Multiple

The product result of multiplying a given number by an integer.

Twice

A mathematical term meaning two times a quantity or multiplying an amount by $2$.

Times

A key word used to signify multiplication in mathematical expressions and word problems.

Each

A key word often indicating equal groups or unit values in multiplication and division problems.

Decrease

To make or become smaller in amount or value, often associated with subtraction.

Remainder

The amount left over after performing division.

Multiply

To calculate the total of a number added to itself a specified number of times.

Whiteboard Addition Example

The expanded place value addition shown on the whiteboard: $10. + 6. + 0.3 + 0.08 = 16.38$.

Tens Place

The position representing tens, shown by $10.$ in the whiteboard column addition example.

Ones Place

The position representing units, shown by $6.$ in the whiteboard column addition example.

Tenths Place

The position one place to the right of the decimal point, represented by $0.3$ on the whiteboard.

Hundredths Place

The position two places to the right of the decimal point, represented by $0.08$ on the whiteboard.

Classroom Whiteboard Agenda

The board displaying the lecture date, list of topics, and decimal place value column addition.

FA

An abbreviation written at the top left of the whiteboard above the agenda.

CR

An abbreviation written on the far left section of the whiteboard.

Decimal Point

A period used to separate the whole number part from the fractional part of a decimal number.

Sum

The total value resulting from the addition of two or more numbers, such as $16.38$ on the whiteboard.

Standard Form

A way of writing a number using standard digits, such as $16.38$.

Expanded Form

Writing a number to show the individual place value of each digit, as in $10. + 6. + 0.3 + 0.08$.

Greater Than ($>$)

A mathematical symbol used in number comparison indicating that the left value is larger than the right value.

Less Than ($<$)

A mathematical symbol used in number comparison indicating that the left value is smaller than the right value.

Equal To ($=$)

A mathematical symbol indicating that two values or expressions represent the exact same amount.