# Chapter 1 Whole Numbers

• Chapter 1

Chapter Objective:

* Whole numbers can be written in different ways. Numbers can be compared and rounded, according to their place value.

Vocabulary:

Hundred thousand - 10 ten thousands or 100,000

Standard form - A number written with one digit for each place. 3 million 5 hundred in standard form is 3,000,500.

Word form - A number written in words. The word form of 7,010,000 is seven million ten thousand.

Periods - Groups of three places commonly used for reading numbers that are 1,000 or greater. Ex: ones period, thousands period, millions period... These groups are separated by commas to identify their value.

Million - 10 hundred thousands or 1,000,000.

Place value - The value of the place of a digit in a number. In 5,873, the digit 8 is in the hundreds place, so it stands for 800.

Expanded form - A number written to show the value of each digit. 523 = 500 + 20 + 3.

Greater than ( > ) - Representing more that a quantity. Ex: 523 > 235

Less than ( < ) - Representing less than a quantity. Ex: 235 < 523

Round - To approximate a number to the nearest ten, hundred, thousand, and so on...

Estimate - To find an approximate value to a numerical expression.

Front-end estimation with adjustment - An estimation made by computing with the digits in the greatest place and then adjusting it to include the remaining place values. Ex: Front-end estimation would turn 3,815 to 3,000. Front-end estimation with adjustment would turn the 815 to 800; So the number 3,815 would become 3,800 using front-end estimation with adjustment.