Subtraction with Regrouping Concepts

Angie from Lucky Little Learners introduces subtraction with regrouping using manipulatives. She emphasizes the importance of understanding the 'why' before the 'how' in learning new skills. Angie demonstrates subtraction using unifix cubes and place value mats, providing a step-by-step example of subtracting 32 - 19. She explains the concept of regrouping and borrowing, ensuring students grasp the process. The lesson concludes with a complete subtraction example, reinforcing the learning objectives.

Why is it important to use manipulatives when teaching subtraction with regrouping?

• To make the class more interactive

• To ensure students grasp the underlying concept

• To help students understand the procedure

• To make the lesson more colorful

What is the preferred manipulative for teaching subtraction with regrouping?

• Number lines

• Base 10 blocks

• Unifix cubes

• Counting beads

What is the first step when setting up a subtraction problem with regrouping?

• Start with the tens place

• Start with the hundreds place

• Start with the ones place

• Start with the thousands place

What do you do if you cannot subtract the ones in a subtraction problem?

• Add more ones

• Borrow from the tens place

• Skip the subtraction

• Borrow from the hundreds place

How do you create more ones when you need to borrow?

• Add more tens

• Use a calculator

• Break apart a ten into ones

• Add more ones from another number

After regrouping, what is the equivalent of 2 tens and 12 ones?

• 3 tens and 2 ones

• 2 tens and 2 ones

• 3 tens and 12 ones

• 2 tens and 12 ones

What is the result of subtracting 9 from 12 in the regrouped problem?

• 4

• 5

• 3

• 2

What is the final step in solving the subtraction problem after regrouping?

• Subtract the tens

• Add the ones

• Multiply the tens

• Divide the ones

What is the final answer to the subtraction problem 32 - 19?

• 13

• 12

• 15

• 14