Understanding Subtraction with Base 10 Blocks

This video tutorial teaches how to subtract two 3-digit numbers using base 10 blocks. It begins with a problem involving dandelions and explains the concept of place value in 3-digit numbers. The tutorial introduces base 10 blocks and demonstrates subtraction through examples, including solving the initial dandelion problem. The lesson concludes with a summary of the subtraction method using base 10 blocks.

What is the main problem introduced at the beginning of the lesson?

• How to divide numbers using base 10 blocks.

• How to find the number of dandelions left after some blew away.

• How to multiply numbers using base 10 blocks.

• How to add two numbers using base 10 blocks.

What does the digit in the hundreds place represent?

• It represents 1.

• It represents 1000.

• It represents 10.

• It represents 100.

Which base 10 block represents the number 10?

• One cube.

• One 10 long.

• One 100 flat.

• One 1000 block.

In the example of 483 minus 251, how many hundreds are left after subtraction?

• 2 hundreds

• 4 hundreds

• 1 hundred

• 3 hundreds

What is the result of subtracting 251 from 483?

• 262

• 232

• 242

• 252

How many dandelions are left after 142 blow away from 368?

• 246

• 216

• 226

• 236

In the example of 267 minus 135, which place value do we start subtracting from?

• Thousands place

• Hundreds place

• Tens place

• Ones place

What is the result of subtracting 135 from 267?

• 142

• 132

• 122

• 152

How many tens are left after subtracting 135 from 267?

• 5 tens

• 2 tens

• 3 tens

• 4 tens

What is the key learning outcome of this lesson?

• How to multiply two 3-digit numbers using base 10 blocks.

• How to divide two 3-digit numbers using base 10 blocks.

• How to add two 3-digit numbers using base 10 blocks.

• How to subtract two 3-digit numbers using base 10 blocks.