Mastering 2-Digit Subtraction with Base 10 Blocks

Samantha from SPO Resources demonstrates how to use base 10 blocks to subtract two-digit numbers without regrouping. The video covers setting up the problem, subtracting ones and tens, and verifying the result using the standard algorithm. Viewers are encouraged to practice the strategy and revisit the video if needed.

What is the first step in using base 10 blocks for subtraction?

• Subtract the ones

• Write the numbers down

• Place the blocks on the value mat

• Check the result

How many ones are subtracted from the number 35 in the example?

• None

• Three

• Five

• Two

After subtracting two ones, how many ones remain?

• None

• One

• Two

• Three

How many tens are subtracted in the example?

• Two

• Three

• One

• None

What is the result of 5 minus 2 in the ones place?

• 3

• 2

• 1

• 0

What is the result of 3 minus 2 in the tens place?

• 0

• 3

• 2

• 1

How does Samantha verify her subtraction result?

• By comparing the blocks on the mat with the numbers

• By asking a friend

• By using a calculator

• By guessing

What should a student do if they are stuck on a problem?

• Re-watch the video or review the example

• Skip the problem

• Guess the answer

• Wait for help