Adding Within 1,000 by Regrouping Base 10 Blocks

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

• To replace traditional arithmetic methods

• To confuse students with complex shapes

• To help visualize and understand number composition

• To make numbers look more colorful

In the example of adding 527 and 246, what is the first step?

• Begin with the ones column

• Start with the tens column

• Combine the hundreds first

• Add the numbers directly without regrouping

What common mistake is highlighted in the first example?

• Forgetting to add the hundreds

• Not regrouping the tens correctly

• Adding numbers in the wrong order

• Failing to remove regrouped ones or tens

When adding 492 and 385, what do you do after finding 17 tens?

• Subtract the extra tens

• Ignore the extra tens

• Regroup them into one group of 100

• Add them directly to the hundreds

In the second example, what is the final sum of 492 and 385?

• 867

• 872

• 870

• 877

In the third example, what is the result of adding 169 and 755?

• 934

• 914

• 944

• 924

What is the key takeaway from the lesson on adding within 1,000?

• Always start with the hundreds column

• Regrouping is unnecessary

• Addition is only possible with base 10 blocks

• Regrouping base 10 blocks is essential for accurate addition