Rounding Whole Numbers Through

Millions

By Mr. Bales

Objective» You will be able to round whole

numbers through the millions to the nearest 10, 100, 1,000, 10,000, or 100,000.

» Standard 4NS1.3 - Round whole numbers through the millions to the nearest ten, hundred, thousand, ten thousand, or hundred thousand.

Problem» Each year immigrants from around

the world come to the United States. In 2003, California schools welcomed 175,090 immigrant students.

» What is 175,090 rounded to the nearest thousand?

Let’s Hear a Song About Rounding!!

By Mr. Bales

Let's Watch Mr. Parsons!!

How To Round» Let’s look at this number 175,090.» First, underline the place value that you

want to round.» Then, look at the digit to the right. If the

digit is 4 or less, the digit in the rounding place stays the same.

» If the digit to the right is 5 or more. The digit in the rounding place increases by one.

» Last, change all the digits to the right of the rounding place to zero.

Bales BucksGame Time!!

» Round to the nearest hundred

» 71,105» 654,354» 678,947» Round to the nearest

ten thousand» 1,256,876» 23,786,983

» Round to the nearest hundred thousand

» 234,654,899» 3,853,216» Round the nearest

million» 34,652,985» 976,634,321

Assignment

» Page 38 - #’s 9 – 20» Get them all correct No Math

Homework