Double-Digit Dash! Script

Warm-Up: Number Line Race (5 minutes)

"Good morning, math detectives! Let's get our brains warmed up. I've handed out a Number Line Warm-Up for everyone. Take about three minutes to complete the activities on it. Remember what we know about counting and finding numbers on a line!"

Allow students to work, circulate and assist as needed.

"Alright, let's quickly review! What number comes after 15? (Wait for responses.) Great! If you start at 10 and jump 5 spaces, where do you land? (Wait for responses.) Excellent job, everyone! This warm-up helps us remember how numbers work."

Introduction: What's a Double-Digit? (5 minutes)

"Now, let's dive into something super cool: double-digit numbers! Has anyone heard that term before? What do you think it might mean?"
(Listen to student responses.)

"That's right! When we say 'double-digit,' we're talking about numbers that have two numbers, or digits, in them. Can you think of any numbers with two digits?"
(Encourage students to share examples like 10, 25, 30, etc.)

"Let's look at our Double-Digit Dash! Slide Deck. On Slide 2, we see numbers like 23, 45, or 99. These are all double-digit numbers! Each double-digit number has a 'tens place' and a 'ones place.' Who can tell me what digit is in the tens place in the number 23? And what about the ones place?"
(Guide students to identify 2 as tens and 3 as ones.)

"Super! Understanding tens and ones will be our superpower today!"

Guided Practice: Adding & Subtracting Together (10 minutes)

"Are you ready to use our superpower for adding and subtracting? Let's turn to Slide 3 of our Double-Digit Dash! Slide Deck."

Addition

"When we add double-digit numbers, it's like a puzzle, and we always start with the easiest part: the ones place! Look at our example: 24 + 13. We add the ones first: 4 + 3 equals...? (Wait for 7). Write that in the ones column."

"Now, for the tens! 2 + 1 equals...? (Wait for 3). Write that in the tens column. Our answer is 37! Easy peasy, right?"

"Let's try one together from Slide 4: 31 + 25. First, the ones! 1 + 5 is...? (Wait for 6). Now the tens! 3 + 2 is...? (Wait for 5). So, 31 + 25 equals...? (Wait for 56). Fantastic!

Subtraction

"Now, let's try subtracting! Turn to Slide 5. It's the same idea: start with the ones place! Look at 48 - 21. First, the ones: 8 - 1 equals...? (Wait for 7). Write that down."

"Then the tens! 4 - 2 equals...? (Wait for 2). Our answer is 27! You're all doing so well!"

"One more together on Slide 6: 57 - 32. Ones first: 7 - 2 is...? (Wait for 5). Tens next: 5 - 3 is...? (Wait for 2). So, 57 - 32 equals...? (Wait for 25). Amazing work!"

Independent Practice: Worksheet Challenge (5 minutes)

"You've been incredible mathematicians! Now it's time to show what you know. I'm handing out the Double-Digit Practice Worksheet. You'll find some addition and subtraction problems to solve on your own. Remember our rules: start with the ones, then do the tens! Take your time and do your best."

Circulate and provide individual support, reminding students of the steps as needed.

Cool Down: Reflection Time (5 minutes)

"Alright, please bring your completed worksheets to my desk. Excellent effort, everyone!"

"Before we finish, I have one more quick task for you. I'm passing out an Exit Ticket: Math Reflection. I want you to answer the questions about what you learned today. This helps me know what you understood and what we might need to review. You have about three minutes to complete it quietly."

Collect exit tickets.

Number Line Warm-Up

Name: _________________________

Date: _________________________

Part 1: Fill in the Missing Numbers!

Look at the number line below. Fill in the numbers that are missing.

10, 11, ____, 13, ____, ____, 16, ____, 18, ____, 20

25, ____, 27, 28, ____, ____, 31, ____, 33, ____, 35

Part 2: Number Jumps!

1. Start at 12. Jump forward 3 numbers. What number do you land on?

   Answer: _________________________

2. Start at 18. Jump backward 4 numbers. What number do you land on?

   Answer: _________________________

3. Start at 20. Jump forward 5 numbers. What number do you land on?

   Answer: _________________________

Double-Digit Practice Worksheet

Name: _________________________

Date: _________________________

Double-Digit Addition

Solve the following addition problems. Remember to add the ones column first, then the tens column!

1. 21 + 14 =
   
   
   
   

2. 32 + 25 =
   
   
   
   

3. 46 + 13 =
   
   
   
   

4. 50 + 29 =
   
   
   
   

5. 15 + 33 =
   
   
   
   

Double-Digit Subtraction

Solve the following subtraction problems. Remember to subtract the ones column first, then the tens column!

1. 38 - 12 =
   
   
   
   

2. 47 - 23 =
   
   
   
   

3. 59 - 30 =
   
   
   
   

4. 64 - 11 =
   
   
   
   

5. 75 - 45 =
   
   
   
   

Exit Ticket: Math Reflection

Name: _________________________

Date: _________________________

1. What is one new thing you learned about double-digit numbers today?
   
   
   
   
   

2. Was adding or subtracting double-digit numbers easier for you? Why?
   
   
   
   
   
   
   

3. On a scale of 1 to 5, how confident do you feel about adding and subtracting double-digit numbers without regrouping?
   (Circle one)

   1 (Not confident) 2 3 (Somewhat confident) 4 5 (Very confident)