Topic 2-4 Subtract Whole Numbers

Presentation

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Mathematics

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4th Grade

•

Hard

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CCSS

2.NBT.A.3, 5.NBT.B.7, 3.NBT.A.1

Standards-aligned

JODI HETMAN

Used 24+ times

FREE Resource

9 Slides • 6 Questions

Topic 2-4 Subtract Whole Numbers

Let's Review What We Know First

Multiple Select

What do we call a set of three numbers, side-by-side, in the ones-tens-hundreds places?

place value

rounded numbers

period

Fill in the Blanks

Type answer...

In today's lesson, we will:

Use place value and an algorithm to subtract whole numbers.

Today we will be borrowing from our neighbor in order to subtract.

Remember, you are subtracting the bottom number FROM the top number.

Solve & Share Question

Take time to try this problem and then come back

(to class / to our Zoom call / etc.):

A crayon company makes 87,491 blue crayons, 36,262 red crayons, and 25,063 gray crayons. How many more blue crayons are made than red and gray crayons combined?

White board demonstration

Before we solve this, let's estimate the difference.

Round to the thousands.

Multiple Choice

What is 362,839 rounded to the thousands place?

362,000

363,000

362,800

362,900

Multiple Choice

Estimate 363,000 - (81,000 + 112,000)

171,000

169,500

169,000

170,000

Multiple Choice

How many more people actually attended the street fair in 2016 than in 2014 and 2015 combined?

169,533 people

169,540 people

169,538 people

170,008 people

Poll

What is another way to check our subtraction work?

Use Inverse Operations (add)

Check a classmate's answers

Have dad check

my work

Ask my teacher

if I am right

When you complete your practice buddy, make sure you read the directions.

You will be asked to check your work with inverse operations and you will be asked to use estimates. Read carefully.

Topic 2-4 Subtract Whole Numbers

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