Mental Math Subtraction Practice

The video tutorial introduces the concept of subtracting 10 or 100 from three-digit numbers using mental math strategies. The instructor demonstrates several examples, emphasizing the importance of aligning numbers correctly and using mental shortcuts for faster calculations. A story problem involving monkeys is used to apply these subtraction techniques in a real-world context. The video concludes with encouragement to enjoy math and a reminder to subscribe for more content.

What is the main focus of the video tutorial?

• Adding two-digit numbers

• Subtracting 10 or 100 from a three-digit number

• Multiplying three-digit numbers

• Dividing three-digit numbers

What is the place value of the digit '5' in the number 354?

• Thousands place

• Ones place

• Tens place

• Hundreds place

When subtracting 10 from 354, what is the correct alignment of the numbers?

• Align the 10 under the tens place

• Align the 10 under the hundreds place

• Align the 10 under the ones place

• Align the 10 randomly

What is the result of 354 minus 10 using mental math?

• 374

• 344

• 354

• 364

What is the result of 578 minus 10 using mental math?

• 598

• 588

• 568

• 578

What is the result of 578 minus 100 using mental math?

• 508

• 498

• 488

• 478

What is the result of 627 minus 100 using mental math?

• 537

• 547

• 557

• 527

What is the result of 164 minus 10 using mental math?

• 154

• 184

• 164

• 174

What is the result of 491 minus 100 using mental math?

• 421

• 391

• 411

• 401

In the story problem, how many monkeys are left at the party after 10 leave?

• 289

• 319

• 309

• 299