Dividing Quantities and Understanding Relationships

In this lesson, students learn to divide decimals by whole numbers. The teacher introduces the concept using a real-world problem involving dividing a race into equal sections. The lesson covers converting decimals to tenths, using bar models for visualization, and applying multiplication and division relationships. Students practice with various problems, reflecting on strategies and ensuring understanding through additional exercises.

What is the main focus of lesson 17 session two?

• Multiplying decimals by whole numbers

• Subtracting decimals from whole numbers

• Dividing decimals by whole numbers

• Adding decimals to whole numbers

What is the total length of Coach Anne's race?

• 2.7 kilometers

• 3 kilometers

• 9 kilometers

• 27 kilometers

How many equal sections does Coach Anne want to divide the race into?

• 3 sections

• 7 sections

• 9 sections

• 27 sections

What is the first step in solving the problem of dividing 2.7 kilometers into 9 equal parts?

• Subtract 9 from 2.7

• Convert 2.7 into tenths

• Multiply 2.7 by 9

• Add 2.7 to 9

What is 27 tenths divided by 9?

• 3 tenths

• 9 tenths

• 27 tenths

• 0.3 tenths

How can you verify the solution of dividing 2.7 by 9?

• By adding 2.7 and 9

• By multiplying 3 tenths by 9

• By dividing 9 by 2.7

• By subtracting 9 from 2.7

What is a bar model used for in this lesson?

• To represent division problems

• To multiply decimals

• To add decimals

• To subtract decimals

How do you convert 2.7 into tenths?

• By multiplying by 10

• By dividing by 10

• By adding 10

• By subtracting 10

What is the relationship between multiplication and division used in this lesson?

• Division is the inverse of addition

• Multiplication is the inverse of subtraction

• Multiplication is the inverse of division

• They are unrelated

How much will each person receive if $20.35 is split among 5 people?

• $4.07

• $5.07

• $6.07

• $7.07