Adding Groups of Tens

In this lesson, students learn to add groups of tens to two-digit numbers using place value mats. The teacher demonstrates adding 20 to 32 and guides students through practice problems, emphasizing the importance of visualizing the process with drawings. Students are encouraged to show their work and understand the changes in tens and ones.

What is the main focus of this lesson?

• Subtracting groups of tens

• Multiplying groups of tens

• Adding groups of tens

• Dividing groups of tens

How many tens are there in the number 32?

• 1

• 2

• 3

• 4

When adding 20 to 32, which part of the number changes?

• The ones

• Both tens and ones

• The tens

• Neither

What is the learning goal of this lesson?

• Multiplying groups of tens with a two-digit number

• Adding groups of tens to a two-digit number

• Dividing groups of tens from a two-digit number

• Subtracting groups of tens from a two-digit number

How many tens are added to 18 in the practice exercise?

• 2

• 4

• 1

• 3

What is the result of adding 30 to 24?

• 44

• 54

• 64

• 74

In the number bond exercise, what are the two parts that make up 32?

• 20 and 12

• 30 and 2

• 22 and 10

• 12 and 20

What is the new number when 20 is added to 27?

• 37

• 47

• 57

• 67

What should students do after solving the final practice problems?

• Submit their answers without showing work

• Show their work with a picture

• Only write the answers

• Discuss with a partner