Module 2 Lesson 24

Module 2 Lesson 24

Dividing with Place Value Understanding

Multiple Choice

When talking about division, which thinking pattern are we using?

• Some and Some More (SSM)

• Some Went Away (SWA)

• Equal Groups Put Together (EGPT)

• Equal Groups Take Apart (EGTA)

• Bigger, Smaller, Difference (BSD)

Open Ended

Consider the problem:

 $400\ \div50$  

Explain the following: 
- Which number are we taking apart? 
- How big will the equal groups be? 
- How many groups can we make?

Open Ended

Consider the problem:

 $668\ \div2$  

- What number are we taking apart? 
- How big will the equal groups be? 
- How did you arrive at your answer?

This problem can be made easier by splitting up the dividend of 668:

668 = 600 + 60 + 8

We can then divide each piece by our divisor of 2:

 $\left(600\div2\right)\ +\ \left(60\div2\right)+\left(8\div2\right)$  

Now we have our three pieces:

 $600\div2\ =\ 300\$ 
  $60\div2\ =\ 30$  

 $8\div2\ =\ 4$  
When we add them together we will have our answer

Open Ended

Consider the problem:

 $6.93\div3$  

- What pieces can we split our dividend into? 
- What do you get when you divide each piece by our divisor of 3?
- How did you arrive at your answers? 

Open Ended

Consider the problem:  $1,200\div40$  

- What number are we taking apart? 
- How big will the equal groups be? 
- How did you arrive at your answer?

We can make this problem easier by splitting our divisor of 40:

 $40=10\times4$  

The we can divide our dividend of 1,200 by both pieces, one after the other:
 $1,200\div10\div4$  

 $1,200\div10=120$  

 $120\div4=40$  
or
 $12\ tens\div4\ =\ 3\ tens$  

Open Ended

Consider the problem: 
 $69.6\div30$  

- What number are we taking apart into groups? 

- What two pieces can we split our divisor into? 
- How did you arrive at your answer? 

 $30=10\times3$  

 $69.6\div10\div3$  

 $6.96\div10=0.696$  

 $0.696\div3=0.131$  
or
 $\left(6\ tenths\div3\right)+\left(9\ hundredths\div3\right)+\left(6\ thousandths\div3\right)$  

Open Ended

Consider the problem:  $9,036\div300$  

Explain how you would solve the problem, step by step.