Subtraction with Base 10 Blocks

The video tutorial demonstrates how to subtract three-digit numbers using base 10 blocks. It covers two examples: 720 minus 597 and 656 minus 278. The process involves exchanging blocks to facilitate subtraction at each place value, starting from the ones, then tens, and finally hundreds. The tutorial provides a visual and paper-based method to understand subtraction better.

What is the initial step in subtracting 720 minus 597 using base 10 blocks?

• Subtract the ones place first

• Perform an exchange immediately

• Subtract the hundreds place first

• Subtract the tens place first

Why is an exchange necessary when subtracting the ones place in 720 minus 597?

• Because the tens place needs adjustment

• Because there are fewer ones in the minuend

• Because the hundreds place needs adjustment

• Because there are more ones in the minuend

After performing an exchange in the ones place, how many ones blocks are available for subtraction?

• 5

• 3

• 7

• 10

What is the result of subtracting the tens place in the example 720 minus 597?

• 1

• 4

• 3

• 2

Why is another exchange necessary when subtracting the tens place in 720 minus 597?

• There are more tens in the minuend

• There are fewer tens in the minuend

• The ones place needs adjustment

• The hundreds place needs adjustment

What is the final result of the subtraction 720 minus 597?

• 125

• 124

• 126

• 123

In the second example, 656 minus 278, what is the first step?

• Perform an exchange

• Subtract the hundreds place

• Subtract the tens place

• Subtract the ones place

How many ones blocks are available after performing an exchange in the second example?

• 18

• 16

• 20

• 14

What is the result of subtracting the tens place in the second example?

• 5

• 6

• 7

• 8

What is the final result of the subtraction 656 minus 278?

• 381

• 380

• 379

• 378