Module 1.2Writing Two-Digit Numbers

Writing Two-Digit Numbers

Where is the number that is five more than 20?

Writing Two-Digit Numbers

Where is the number that is one before 40?

Writing Two-Digit Numbers

Where is the number that is five before 80?

Writing Two-Digit Numbers

Writing Two-Digit NumbersI need seven student volunteers to represent a number using your fingers in groups of tens and ones.• What do you notice about the number?• How can you use the tens and ones parts to

read the number?• Work with a partner to write the digits on

your expanders. Be ready to say the number name by using the digits written in the tens and ones place. Example: “___ tens is ____ and ____ ones is ____”

• What number name will we write for this number?

• Sixty-eight• What numeral will we write for sixty-eight?• 68

Writing Two-Digit NumbersI need six student volunteers to represent a number using your fingers in groups of tens and ones.• What do you notice about the number?• How can you use the tens and ones parts to

read the number?• Work with a partner to write the digits on

your expanders. Be ready to say the number name by using the digits written in the tens and ones place. Example: “___ tens is ____ and ____ ones is ____”

• What number name will we write for this number?

• Fifty-Three• What numeral will we write for sixty-eight?• 53

Writing Two-Digit NumbersI need four student volunteers to represent a number using your fingers in groups of tens and ones.• What do you notice about the number?• How can you use the tens and ones parts to

read the number?• Work with a partner to write the digits on

your expanders. Be ready to say the number name by using the digits written in the tens and ones place. Example: “___ tens is ____ and ____ ones is ____”

• What number name will we write for this number?

• Thirty-Five• What numeral will we write for sixty-eight?• 35

Writing Two-Digit NumbersI need five student volunteers to represent a number using your fingers in groups of tens and ones.• What do you notice about the number?• How can you use the tens and ones parts to

read the number?• Work with a partner to write the digits on

your expanders. Be ready to say the number name by using the digits written in the tens and ones place. Example: “___ tens is ____ and ____ ones is ____”

• What number name will we write for this number?

• Forty-One• What numeral will we write for sixty-eight?• 41

Writing Two-Digit NumbersI need two student volunteers to represent a number using your fingers in groups of tens and ones.• What do you notice about the number?• How can you use the tens and ones parts to

read the number?• Work with a partner to write the digits on

your expanders. Be ready to say the number name by using the digits written in the tens and ones place. Example: “___ tens is ____ and ____ ones is ____”

• What number name will we write for this number?

• Four Teen • What numeral will we write for sixty-eight?• 14

Writing Two-Digit NumbersI need four student volunteers to represent a number using your fingers in groups of tens and ones.• What do you notice about the number?• How can you use the tens and ones parts to

read the number?• Work with a partner to write the digits on

your expanders. Be ready to say the number name by using the digits written in the tens and ones place. Example: “___ tens is ____ and ____ ones is ____”

• What number name will we write for this number?

• Forty • What numeral will we write for sixty-eight?• 40

On Going Practice

Reflection 84

How many tens does this number have?How many ones does this number have?What number name do we say for this number?

How do 84 and 48 compare?

What tells you that the values are different when you hear the numbers?What do you hear first- the value of the tens or the value of the ones?