MAFS.3.NBT.1.1Archived Standard

A printable hundreds chart featuring a 10x10 table numbered 1 to 100. (found on Illuminations website under "Trading for Quarters")

Type: Educational Software / Tool

Students round one- to four-digit numbers to the nearest 10.

Type: Formative Assessment

Student are asked to find the smallest and largest possible numbers that will round to given values.

Type: Formative Assessment

Students round two-, three-, and four-digit numbers to the nearest hundred.

Type: Formative Assessment

The student determines the value of a number which when rounded to the nearest 10 and to the nearest 100 is 300.

Type: Formative Assessment

In this lesson, students will demonstrate knowledge of Place Value to round whole numbers to the nearest 10 and 100 using the following strategies: Number line, number strip, Counting on and back. Students will be given three problems to demonstrate the relationship of nearness on a number line in three of the four strategies learned to round whole number to the nearest 10 or 100.

Type: Lesson Plan

Through playing a game, the students use the number line as a model to help them integrate the use of place value to round numbers to the nearest tens.

Type: Lesson Plan

In this lesson, students will tap prior knowledge of place value and dimes to round numbers to the nearest 10. Students will use number lines with tick marks in increments of 10 to visualize the closer decade and then progress to using the place value of numerals to round to the tens place. Pairs of students will participate in a rounding activity using a number line.

Type: Lesson Plan

By using prior skip-counting knowledge, place value, and number lines, students will learn how to round to the nearest ten.

Type: Lesson Plan

Students will help select the perfect pool construction company to build pools for a vacation housing development. They will have to look at several factors and come up with a plan to find a company that meets the needs of their client.

Model Eliciting Activities, MEAs, are open-ended, interdisciplinary problem-solving activities that are meant to reveal students’ thinking about the concepts embedded in realistic situations. Click here to learn more about MEAs and how they can transform your classroom.

Type: Lesson Plan

In this lesson, students will gain fluency with rounding numbers to the nearest 10s and 100s place. The lesson has number lines to help students understand rounding.

Type: Lesson Plan

The focus of this lesson is to find the halfway point and use it to round numbers.  The lesson rounds numbers 0 to 100 to the nearest ten and 0 to 1000 to the nearest ten and hundred. 

Type: Lesson Plan

In this lesson, students will engage in tellling jokes and doing outside activities to discover rounding concepts. Students will use a vertical number line to round numbers from 0 to 1,000.

Type: Lesson Plan

In this hands-on math exploration, students will use knowledge of estimation and multiplication to develop strategies for estimating how many seeds are in a medium-sized pumpkin.

Type: Lesson Plan

The principal needs help planning the school lunch schedule!  Students will plan a lunch schedule to accommodate all of the students in the school.  However, there can only be 100 students in the cafeteria at a time and only 20 students can sit at a table.  Students will figure out how to arrange the lunch schedule so that every class eats together and so that certain grade levels are not together at the same time.

Model Eliciting Activities, MEAs, are open-ended, interdisciplinary problem-solving activities that are meant to reveal students’ thinking about the concepts embedded in realistic situations. Click here to learn more about MEAs and how they can transform your classroom.

Type: Lesson Plan

This lesson uses a relay game  to provide students with practice for their rounding skills.

Type: Lesson Plan

Help Barkley learn to round numbers to the nearest hundred and bury delicious bones in this dog-themed, interactive tutorial.

Click HERE to open "Rounding Whole Numbers Part 1: To the Nearest Ten" 

Type: Original Student Tutorial

Help Barkley learn how to round numbers to the nearest ten with this interactive tutorial.

Type: Original Student Tutorial

Learn how to round two-, three-, and four-digit numbers to the nearest 10 or 100 in this party-themed, interactive tutorial.

Type: Original Student Tutorial

The purpose of this task is to answer multiple questions regarding rounding. There still may be students who laboriously list every number; the teacher should encourage a more thoughtful approach.

Type: Problem-Solving Task

Students can practice answering mathematics questions on a variety of topics. With an account, students can save their work and send it to their teacher when complete.

Type: Student Center Activity

This webpage contains instructions for several activities and games designed to develop students' understanding of place value while reinforcing addition and subtraction skills. Downloadable materials and suggestions for variations are included along with links to online games. This is the second of two pages of similar activities. The first, Place Value Activities, is cataloged separately.

Type: Teaching Idea

In this Khan Academy video tutorial, see examples of how to round up to four-digit numbers to the nearest ten and hundred.

Type: Tutorial

In this Khan Academy video tutorial, use a number line to round three-digit numbers to the nearest hundred.

Type: Tutorial

In this Khan Academy video, use a number line to round two-digit numbers to the nearest ten.

Type: Tutorial