Vertical Rounding Homework

I began by asking each student to get out the Student Bent Number Line that they created yesterday. Today, I wanted to introduce students to a vertical number line model. I asked, Do number lines always have to be horizontal? Can a number line also be vertical? Later on in the lesson, we will discuss this further. I passed out a plain sheet of paper and modeled how to make a Student Vertical Number Line. Students then placed the vertical number line inside their sheet protectors so that a bent number line from yesterday was on one side and the vertical number line was on the other side. 

Rounding in the Real World

Once students were ready to go, I used a powerpoint presentation (Rounding to the Nearest 1,000) to model actual circumstances in which rounding would be helpful. I also wanted to engage students in Math Practice 4: Model with mathematics.

I explained: Let's say that our principal was interested in buying some new playground equipment and she wanted us to make some recommendations and provide estimated costs. For the first part of this presentation, we will be shopping for new playground equipment. 

Rounding to the Nearest 1,000

For the first rounding task, I showed students a Playground Ant $2,143 and modeled how to use the Bent Number Line and the Vertical Number Line to round 2,143 to the nearest thousand. At first, some students thought we should round to 2,140. Others thought we should round to 2,100. This was a great opportunity to discuss how we should determine the closest thousands to 2,140. I pulled out play money to model 2,000 and 3,000. I then asked, Can we count by thousands and land on 2,140? Would we land on 2,100? How about 2,000? Students immediately began discussing these ideas with peers while naturally engaging in Math Practice 3: Construct Viable Arguments. 

Next, we moved onto rounding $4,390 to the nearest thousand. Here, a student is Rounding 4,390 using both a bent number line and a vertical number line. After each new task (including 6,439, 7,581, and 9,877) students rounded the number to the nearest thousand using both the bent and vertical number lines. Then students volunteered to model their thinking on the board: Rounding 9,877. 

Rounding to the Nearest 10,000

Next, we moved on to rounding to the nearest 10,000. In order to provide students with real-life examples of products that cost even larger amounts, I researched and presented the costs of vehicles using the second half of the Rounding to the Nearest 10,000. I explained: Let's say that we did just a good job recommending playground equipment to our principal that she now wants our help finding the estimated costs of new vehicles! 

I showed students the first slide, Chevrolet Cruze Sedan and we discussed how we would round to the nearest ten thousand using the Bent Number Line and Vertical Number Line. Again, students modeled using their own number lines (Student Model A and Studnet Model B) and volunteered to Model on the Board. 


Estimation Worksheets

Dynamically Created Estimation Worksheets

Here is a graphic preview for all of the estimation worksheets. You can select different variables to customize these estimation worksheets for your needs. The estimation worksheets are randomly created and will never repeat so you have an endless supply of quality estimation worksheets to use in the classroom or at home. Our estimation worksheets are free to download, easy to use, and very flexible.

These estimation worksheets are a great resource for children in Kindergarten, 1st Grade, 2nd Grade, 3rd Grade, 4th Grade, 5th Grade, and 6th Grade.

Click here for a Detailed Description of all the Estimation Worksheets.



Quick Link for All Estimation Worksheets

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Detailed Description for All Estimation Worksheets

Sums and/or Differences Worksheets - 2 Digits with Rounding Guide
This estimation worksheet will produce 2 digit sums and differences problems with rounding guides for the students to solve. The students will round and rewrite the numbers in the place holder to the right of each problem. You may also instruct the students to solve the actual problems so they can compare the actual to the estimated solutions. You may select to have the first problem worked out as an example.

Sums and/or Differences Worksheets - 3 Digits with Rounding Guide
This estimation worksheet will produce 3 digit sums and differences problems with rounding guides for the students to solve. The students will round and rewrite the numbers in the place holder to the right of each problem. You may select either tens or hundreds for the students to round to for the problems. You may also instruct the students to solve the actual problems so they can compare the actual to the estimated solutions. You may elect to have the first problem worked out as an example.

Sums and/or Differences Worksheets - 4 Digits with Rounding Guide
This estimation worksheet will produce 4 digit sums and differences problems with rounding guides for the students to solve. The students will round and rewrite the numbers in the place holder to the right of each problem. You may select either tens, hundreds, or thousands for the students to round to for the problems. You may also instruct the students to solve the actual problems so they can compare the actual to the estimated solutions. You may elect to have the first problem worked out as an example.

Products Worksheets - 2 Digits Worksheets with Rounding Guide
This estimation worksheet will produce 2 digit multiplication problems with rounding guides for the students to solve the products. The students will round and rewrite the numbers in the place holder to the right of each problem. You may also instruct the students to solve the actual problems so they can compare the actual to the estimated solutions. You may select to have the first problem worked out as an example.

Products Worksheets - 2 and 3 Digits with Rounding Guide
This estimation worksheet will produce 2 and 3 digit multiplication problems with rounding guides for the students to solve the products. The students will round and rewrite the numbers in the place holder to the right of each problem. You may also instruct the students to solve the actual problems so they can compare the actual to the estimated solutions. You may select to have the first problem worked out as an example.

Products Worksheets - 3 Digits with Rounding Guide
This estimation worksheet will produce 3 digit multiplication problems with rounding guides for the students to solve the products. The students will round and rewrite the numbers in the place holder to the right of each problem. You may also instruct the students to solve the actual problems so they can compare the actual to the estimated solutions. You may select to have the first problem worked out as an example.

Sum and Differences Worksheets - 2 Digits Horizontal Format
This estimation worksheet will produce 2 digit sums and differences problems in a horizontal format for the students to solve. You may select to have the first problem worked out as an example.

Sum and Differences Worksheets - 3 Digits Horizontal Format
This estimation worksheet will produce 3 digit sums and differences problems in a horizontal format for the students to solve. You may select either tens or hundreds for the students to round to for the problems. You may elect to have the first problem worked out as an example.

Sum and Differences Worksheets - 4 Digits Horizontal Format
This estimation worksheet will produce 4 digit sums and differences problems in a horizontal format for the students to solve. You may select either tens, hundreds, or thousands for the students to round to for the problems. You may elect to have the first problem worked out as an example.

Products Worksheets - 2 Digits Horizontal Format
This estimation worksheet will produce 2 digit multiplication problems in a horizontal format for the students to solve the products. You may select to have the first problem worked out as an example.

Products Worksheets - 2 and 3 Digits Horizontal Format
This estimation worksheet will produce 2 and 3 digit multiplication problems in a horizontal format for the students to solve the products. You may select to have the first problem worked out as an example.

Products Worksheets - 3 Digits Horizontal Format
This estimation worksheet will produce 3 digit multiplication problems with rounding guides for the students to solve the products. The students will round and rewrite the numbers in the place holder to the right of each problem. You may also instruct the students to solve the actual problems so they can compare the actual to the estimated solutions. You may select to have the first problem worked out as an example.

Sum and Differences Word Problems - 2 Digits
This estimation worksheet will produce 2 digit sums and/or differences word problems for the students to solve. You can select sum, difference or a mixture of both types of problems.

Sum and Differences Word Problems - 3 Digits
This estimation worksheet will produce 3 digit sums and/or differences word problems for the students to solve. You can select sum, difference or a mixture of both types of problems.

Sum and Differences Word Problems - 4 Digits
This estimation worksheet will produce 4 digit sums and/or differences word problems for the students to solve. You can select sum, difference or a mixture of both types of problems.


















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