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

Tags

CCSS.5.NBT.B.7

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

• None

• Three

• Five

• Two

Tags

CCSS.5.NBT.B.7

After subtracting two ones, how many ones remain?

• None

• One

• Two

• Three

Tags

CCSS.1.OA.A.1

How many tens are subtracted in the example?

• Two

• Three

• One

• None

Tags

CCSS.1.NBT.C.5

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

• 3

• 2

• 1

• 0

Tags

CCSS.7.NS.A.1C

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

• 0

• 3

• 2

• 1

Tags

CCSS.7.NS.A.1C

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

Tags

CCSS.1.OA.A.1

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

Tags

CCSS.4.NF.A.1

CCSS.5.NF.B.5B