##  Number & Operations in Base Ten – 4th Grade

#### Generalize place value understanding for multi-digit whole numbers.

CCSS.Math.Content.4.NBT.A.3
Use place value understanding to round multi-digit whole numbers to any place.

Teacher Notes
The teacher needs to understand the role place value has in understanding whole numbers.  Understanding place value and the base ten number system helps students apply the same rules to decimals in later grades.

Student Knowledge Goals

I know whole numbers from zero to one million.
I know the names and values of the digits in any given place value position up to one million.
I know the rules for rounding to any selected place value up to one million, beyond just the leading digit.
I can determine whether the digit being rounded goes up by one or stays the same based on the value of the digit to the right.
I can use place value models to reason about numbers.

Vocabulary

estimate
place
place value positions (hundred thousand, million, etc.)
round/rounding
ten thousand
value
whole number

Lessons
Engage NY Module 1 C-7 – Round multi-digit numbers to the thousands place using the vertical number line. Includes printable classwork and homework
Engage NY Module 1 C-8 – Round any number with vertical number line. Includes printable classwork and homework
Engage NY Module 1 C-9 – Place value understanding to round multi-digit numbers to any place value Includes printable classwork and homework
Engage NY Module 1 C-10 – Place value to round multi-digit numbers to any place value using real world applications. Includes printable classwork and homework

Student Video Lessons
Learn Zillion - Round multi-digit whole numbers to any place

Study Jams - Estimating Whole Numbers

Online Problem and Assessments
Khan Academy – Questions and Video Lessons
Rounding
Estimate Sums
Estimate Sums: Word Problems
Estimate Differences
Estimate Differences: Word Problems
Estimate Products
Estimate Products II
Divide by 1-Digit Numbers: Estimate Quotients
Estimate Quotients

Online Games
Place Value

Printables
Rounding - Ten and Hundreds. Reteach students basic rounding skills.
Rounding - Nearest Thousand, Ten Thousand, Hundred Thousand
Estimating -  Whole Numbers
Rounding Worksheets Generator