Place Value Changes in Addition and Subtraction

This video tutorial teaches how to add and subtract 100 from three-digit numbers using a place value model. It begins with an introduction to place values, focusing on hundreds, tens, and ones. The tutorial then demonstrates adding and subtracting 10, followed by detailed steps for adding and subtracting 100. The video includes practice examples to reinforce the concept that only the hundreds place changes when adding or subtracting 100.

What part of a number changes when you add or subtract 100?

• All places

• The ones place

• The tens place

• The hundreds place

When adding 10 to 125, which place value changes?

• Hundreds place

• Tens place

• Ones place

• None

If you subtract 10 from 175, what is the result?

• 155

• 175

• 165

• 185

What is 245 plus 100?

• 145

• 245

• 445

• 345

How does the number 327 change when you add 100?

• All places increase by 1

• The tens place increases by 1

• The hundreds place increases by 1

• The ones place increases by 1

What is the result of subtracting 100 from 253?

• 253

• 453

• 153

• 353

When you subtract 100 from 346, what is the new number?

• 446

• 146

• 346

• 246

What happens to the number 441 when you subtract 100?

• It becomes 541

• It becomes 441

• It becomes 241

• It becomes 341

What is 145 plus 100?

• 445

• 145

• 345

• 245

If you add 100 to 250, what is the result?

• 150

• 450

• 350

• 250