Place Value Power: Adding Numbers Like a Superhero!

Math Grades 1st Grade 2:58 Video
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Lesson Description

Learn how to add numbers by understanding place values like tens and ones. It's like having superpowers for adding big numbers!

Video Resource

Adding and Subtracting Using Place Values - 1st Grade Math (1.NBT.4)

Boddle Learning

Duration: 2:58
Watch on YouTube

Key Concepts

  • Place Value (Tens and Ones)
  • Adding One-Digit Numbers
  • Adding Two-Digit and One-Digit Numbers with Regrouping

Learning Objectives

  • Students will be able to identify the tens and ones place in a two-digit number.
  • Students will be able to add a one-digit number to a two-digit number using place value.
  • Students will be able to add a one-digit number to a two-digit number with regrouping when the sum of the ones place is greater than 9.

Educator Instructions

  • Introduction (5 mins)
    Begin by asking students what they know about adding numbers. Review the concepts of tens and ones using manipulatives like base-ten blocks. Explain that today they will learn how to add bigger numbers using what they know about place value. Show the Boddle Learning video: 'Adding and Subtracting Using Place Values - 1st Grade Math (1.NBT.4)'
  • Guided Practice (15 mins)
    Work through examples similar to those in the video. Start with adding a one-digit number to a two-digit number without regrouping (e.g., 23 + 5). Write the numbers in columns, emphasizing lining up the ones and tens places. Then, move on to examples that require regrouping (e.g., 35 + 7). Explain how if the sum of the ones place is 10 or more, they need to carry the 'ten' to the tens column.
  • Independent Practice (15 mins)
    Provide students with a worksheet containing addition problems involving two-digit and one-digit numbers, some requiring regrouping and some not. Circulate the classroom to provide assistance as needed.
  • Wrap-up (5 mins)
    Review the key concepts of place value and regrouping. Ask students to share what they learned and how place value helps them add bigger numbers. Preview future lessons on subtraction using place value.

Interactive Exercises

  • Place Value Game
    Use base-ten blocks to represent numbers. Have students add the blocks together to solve addition problems. Focus on physically regrouping the ones into a ten when necessary.
  • Whiteboard Addition
    Write addition problems on the board and have students come up and solve them, explaining their thinking process as they go. Emphasize the correct placement of numbers in columns and the regrouping process.

Discussion Questions

  • What is place value and why is it important?
  • How does knowing the tens and ones place help us add numbers?
  • What do we do if the ones place adds up to more than 9?

Skills Developed

  • Understanding Place Value
  • Addition with Regrouping
  • Problem-Solving

Multiple Choice Questions

Question 1:

Which number is in the TENS place in 32?

Correct Answer: 3

Question 2:

What is 14 + 3?

Correct Answer: 17

Question 3:

If you add 25 + 5, what is the sum?

Correct Answer: 30

Question 4:

What is 8 + 4?

Correct Answer: 12

Question 5:

What do you do if the ones place adds up to 10 or more?

Correct Answer: Carry the 'ten' to the tens place

Question 6:

Which number is in the ONES place in 57?

Correct Answer: 7

Question 7:

What is 31 + 6?

Correct Answer: 37

Question 8:

If you add 12 + 8, what is the sum?

Correct Answer: 20

Question 9:

When adding 17 + 5, do you need to carry over to the tens place?

Correct Answer: Yes

Question 10:

What is place value?

Correct Answer: Where a number is located (ones, tens, etc.)

Fill in the Blank Questions

Question 1:

In the number 45, the 4 is in the ______ place.

Correct Answer: tens

Question 2:

When we add, the answer is called the ______.

Correct Answer: sum

Question 3:

The number 18 has 1 ____ and 8 ones.

Correct Answer: ten

Question 4:

To add using place value, line up the ______ and the ones.

Correct Answer: tens

Question 5:

If you add 20 + 10, you get ______.

Correct Answer: 30

Question 6:

In the number 62, the 2 is in the ______ place.

Correct Answer: ones

Question 7:

When you have more than 9 in the ones place, you need to ______ to the tens place.

Correct Answer: carry

Question 8:

Place value helps us add ______ numbers.

Correct Answer: big

Question 9:

The number 37 has 3 tens and ______ ones.

Correct Answer: 7

Question 10:

Adding means to put numbers _______.

Correct Answer: together

Educational Standards

1.NBT.C.4:Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten. CCSS.Math.Content.1.OA.A.1:Use addition and subtraction within 20 to solve word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem. CCSS.Math.Content.1.NBT.B.2:Understand that the two digits of a two-digit number represent amounts of tens and ones.

Teaching Materials

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