Subtraction with Base 10 Blocks

This video tutorial teaches how to subtract numbers within 1000 using base 10 blocks. It explains the concept of breaking numbers into hundreds, tens, and ones, and demonstrates subtraction through examples. The video highlights common mistakes, such as forgetting to remove extra tens or hundreds after regrouping. By the end, viewers will understand how to use base 10 blocks for subtraction and avoid common errors.

What is the primary purpose of using base 10 blocks in subtraction?

• To multiply numbers

• To add numbers more quickly

• To visually represent numbers for easier subtraction

• To make numbers look bigger

How can the number 329 be represented using base 10 blocks?

• Three hundreds, two tens, and nine ones

• Two hundreds, three tens, and nine ones

• Three hundreds, nine tens, and two ones

• Two hundreds, nine tens, and three ones

When subtracting 752 minus 236, why do we need to regroup?

• Because we have fewer hundreds than needed

• Because we have more hundreds than needed

• Because we have fewer ones than needed

• Because we have more ones than needed

What is the first step in subtracting using base 10 blocks?

• Subtract the hundreds

• Subtract the tens

• Add the ones

• Subtract the ones

What is a common mistake when using base 10 blocks for subtraction?

• Removing too many ones

• Forgetting to remove extra tens or hundreds after regrouping

• Forgetting to add extra tens

• Adding extra hundreds

What happens if you forget to remove the extra tens after regrouping?

• The subtraction result will be too low

• The subtraction result will be zero

• The subtraction result will be too high

• The subtraction result will be correct

In the subtraction of 548 minus 365, what do you do if there are not enough tens?

• Borrow from the ones

• Add more tens

• Borrow from the hundreds

• Add more ones

What is the result of subtracting 548 minus 365 using base 10 blocks?

• 185

• 188

• 183

• 186

When subtracting 404 minus 159, why is borrowing necessary?

• Because there are not enough hundreds

• Because there are not enough tens or ones

• Because there are too many hundreds

• Because there are too many ones

What is the final result of subtracting 404 minus 159?

• 245

• 246

• 248

• 247