3.NBT.A.1

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- 3.NBT.A.1Use place value understanding to round whole numbers to the nearest 10 or 100.
- 3.NBT.A.2Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.
- 3.NBT.A.3Multiply one-digit whole numbers by multiples of 10 in the range 10–90 (e.g., 9 × 80, 5 × 60) using strategies based on place value and properties of operations.

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## 3.NBT.A.1

## Use place value understanding to round whole numbers to the nearest 10 or 100.

25 Lesson(s)

### Stories in Stone (Rounding to the Tens Place)

3rd Grade Math »
Unit: Rounding

3rd Grade Math »
Unit: Rounding

### A Trip Through Time (Word Problems, Including Rounding)

3rd Grade Math »
Unit: Rounding

3rd Grade Math »
Unit: Rounding

### Rounding to the Closest Ten Above One Thousand

3rd Grade Math »
Unit: Rounding

3rd Grade Math »
Unit: Rounding

### Take Time for Tens: Act One

3rd Grade Math »
Unit: Place Value Practice

3rd Grade Math »
Unit: Place Value Practice

### Place Value to Thousands

3rd Grade Math »
Unit: Review for Testing

3rd Grade Math »
Unit: Review for Testing

Big Idea:

#### In order to approximate a total, or to help check the reasonableness of an answer, students need to be able to round to the nearest 10 or 100. Check out this lesson for a fun game that gives them practice rounding, adding, and subtracting.

Favorites
(40)

Resources
(9)

Reflections
(1)

### Math Scavenger Hunt (Days 1 - 5)

3rd Grade Math »
Unit: Review for Testing

3rd Grade Math »
Unit: Review for Testing

### Jeopardy Review

3rd Grade Math »
Unit: More Problem Solving Practice

3rd Grade Math »
Unit: More Problem Solving Practice

### Creating a Summer Review Packet (Day 1)

3rd Grade Math »
Unit: Review Activities

3rd Grade Math »
Unit: Review Activities

Big Idea:

#### Students that can write their own story problems, and create math situations that require thought and perseverance to solve, are students that understand. This engaging activity reviews all of the third grade concepts and creates a review packet as well!

Standards:

Favorites
(4)

Resources
(8)

Reflections
(1)

### Happy Hundreds

3rd Grade Math »
Unit: Place Value Practice

3rd Grade Math »
Unit: Place Value Practice

Big Idea:

#### Students need to understand what a rounded number represents, and how that representation may be for several numbers. As the students solve various situations in this lesson, they come to know that a rounded number represents 9 different values.

Favorites
(3)

Resources
(9)

Reflections
(1)

Common Core Math

### Kindergarten

### First Grade

### Second Grade

### Third Grade

### Fourth Grade

### Fifth Grade

### Sixth Grade

### Seventh Grade

### HS Number & Quantity

### HS Algebra

### HS Functions

### HS Geometry

### Kindergarten

### First Grade

### Second Grade

### Third Grade

### Fourth Grade

### Fifth Grade

### Sixth Grade

### Seventh Grade

### Eighth Grade

### Ninth and Tenth Grade

### Kindergarten

### First grade

### Second grade

### Third Grade

### Fourth grade

### Fifth grade

### Middle School

Kindergarten

First Grade

Second Grade

Third Grade

Fourth Grade

Fifth Grade

Sixth Grade

Seventh Grade

HS Number & Quantity

HS Algebra

HS Functions

HS Geometry

Kindergarten

First Grade

Second Grade

Third Grade

Fourth Grade

Fifth Grade

Sixth Grade

Seventh Grade

Eighth Grade

Ninth and Tenth Grade

Kindergarten

First grade

Second grade

Third Grade

Fourth grade

Fifth grade

Middle School