Subtracting Within 1,000 Using Base 10 Blocks

This video tutorial teaches subtraction within 1,000 using base 10 blocks. It covers breaking numbers into base 10 blocks, performing subtraction with examples, and solving for unknowns. The tutorial also addresses common misunderstandings and emphasizes the importance of counting remaining blocks to find the difference.

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

• To add numbers more quickly

• To visually represent numbers for easier subtraction

• To make numbers look bigger

• To confuse students

When subtracting 473 minus 121, what is the first step?

• Subtract the hundreds first

• Add 121 to 473

• Start with the ones column

• Multiply the numbers

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

• Not using any blocks

• Counting the blocks that were removed as the answer

• Adding the blocks instead of subtracting

• Using too many blocks

In the subtraction of 639 minus 219, how many ones are removed?

• 1

• 6

• 2

• 9

What is the result of 639 minus 219 using base 10 blocks?

• 420

• 219

• 639

• 200

In the equation 956 minus blank equals 524, how do you determine the missing number?

• By adding 524 to 956

• By working backwards using base 10 blocks

• By subtracting 524 from 956

• By guessing

What is the missing number in the equation 956 minus blank equals 524?

• 100

• 956

• 524

• 432