Subtracting Multiples of 100 Using a Number Line

This video tutorial teaches how to subtract multiples of 100 from numbers using a number line. It begins with an introduction to the concept, followed by examples of subtracting 100 and other multiples of 100 from various numbers. The tutorial includes real-life examples to illustrate the concept and concludes with a summary of the key points. The focus is on understanding how the hundreds digit decreases while the tens and ones digits remain unchanged.

What happens to the hundreds digit when you subtract 100 from a number like 435?

• It stays the same.

• It doubles.

• It increases by one.

• It decreases by one.

When subtracting multiples of 100, what remains unchanged in the number?

• The tens and ones digits

• The hundreds digit

• The number becomes zero

• The entire number

If you start with 800 tiles and give away 200, how many tiles are left?

• 400

• 500

• 600

• 700

Carrie had 875 and subtracted 300. What number did she end up with?

• 575

• 475

• 675

• 775

How many sandwiches are left if 625 were made and 400 were eaten?

• 225

• 325

• 425

• 525

What is the result of subtracting 400 from 625?

• 325

• 225

• 125

• 425

What is the key concept learned in this lesson?

• Adding multiples of 100

• Subtracting multiples of 100 using a number line

• Multiplying by 100

• Dividing by 100