# Lesson: Rounding: Hundreds Place

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### Lesson Objective

SWBAT round whole numbers to the nearest hundreds place.

### Lesson Plan

Materials Needed: DN Worksheet, white board, dry erase markers, pencils, IND  Worksheet.
Vocabulary: rounding, estimation, actual, rounding off

……….
Do Now (3 -5 min): Teacher hands out rounding worksheet for students to complete independently.

Opening (2 -3 min): Teacher quickly reviews answers to the Do Now and then says, “Today, we are going to get down to the business of rounding whole numbers. By the end of this lesson, you will be able to round whole number to the nearest hundreds place.”

Direct Instruction (10 min): Teacher begins “Today we are going to learn how to round numbers to the nearest hundreds place. I am so happy we learned place value before we began rounding! Let’s quickly review the place and value of each of these digits before we begin. [Teacher writes 562 on the board] and asks:

Who can tell me which digit is in the ones place?
Who can tell me which digit is in the tens place?
How much is it worth?
Who can tell me which digit is in the hundreds place?
How much is it worth?

Teacher continues, “Great job! Ok, so we are ready to learn about rounding to the nearest hundred. To round to the nearest hundred we need to look at the numbers in the tens and ones place. If the numbers in the tens and ones place are between 1 through 49 you round down, which means the number in the hundreds place stays the same. For example 424 rounded to the nearest hundred would be 400. If the numbers in the tens and ones place are between 50 and 99 you round up, which means the number in the hundreds place is rounded up to the next even hundred. For example, the number 888 rounded to the nearest hundred would be 900. Watch as I round a few numbers.” The teacher writes the following numbers on the board and rounds each to the nearest hundred:

672 = ________ [700]
913 = ________ [900]
256 = _________ [300]
761 = _________ [800]
1128 = _________ [1100]

Guided Practice (8-10 min): The teacher continues, “Ok, so now it is your turn! We are going to practice rounding numbers to the nearest hundred. I am going to write ten problems on the board for us to complete together, then you will get a chance to show of your skills independently.  Let’s get started”

2,569 = _________ [2,600]
871 = __________[900]
172 = ________ [200]
993 = ________ [1,000]
536 = _________ [500]
361 = _________ [400]
3,124 = _________ [3,100]
604 = _________ [600]
7,410 = _________ [7,400]
89 = _________ [100]

Independent (10 - 18 min): The teacher hands out the IND worksheet. Students are asked to complete the worksheet independently and turn it in.

Closing (2-3 min): Teacher calls the attention of the students back toward the front of the class to quickly review the answers to the Independent Practice worksheet/ ask what we learned about.

### Lesson Resources

 IND Lesson 4   Classwork DN Lesson 4   Starter / Do Now