Subtraction and Place Value Concepts

This video tutorial teaches how to subtract 10 or 100 from any number using expanded notation. It begins with a review of place value, explaining the significance of hundreds, tens, and ones. The concept of expanded notation is introduced, showing how numbers can be broken down into their component parts. The tutorial then demonstrates how to subtract 100 and 10 from three-digit numbers, emphasizing changes in the hundreds and tens places, respectively. Practical examples are provided to reinforce the concepts, ensuring learners understand the process of subtraction using place value.

What does the digit '4' represent in the number 145?

• Four ones

• Four tens

• Four thousands

• Four hundreds

How is the number 358 expressed in expanded notation?

• 3000 + 500 + 80

• 30 + 5 + 8

• 3 + 5 + 8

• 300 + 50 + 8

When subtracting 10 from 253, which digit changes?

• Hundreds place

• Thousands place

• Tens place

• Ones place

What is the result of subtracting 10 from 253?

• 243

• 253

• 263

• 2430

In the number 569, which digit changes when subtracting 100?

• Ones place

• Thousands place

• Tens place

• Hundreds place

What is the result of subtracting 100 from 569?

• 669

• 569

• 4690

• 469

What is 435 minus 100?

• 3350

• 535

• 435

• 335

What is the result of subtracting 100 from 159?

• 159

• 1590

• 59

• 259

What is the result of subtracting 100 from 262?

• 362

• 262

• 162

• 1620

What is the result of subtracting 100 from 509?

• 409

• 509

• 609

• 4090