Counting Fun: Mastering Numbers 20-29!

Math Grades 1st Grade 8:30 Video
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Lesson Description

Let's learn and practice counting numbers 20 to 29! This lesson will help you understand how these numbers are made up of tens and ones.

Video Resource

Learn Grade 1 - Maths - Practicing 20 to 29

KidsClassroom - Nursery Rhymes & Kids Songs

Duration: 8:30
Watch on YouTube

Key Concepts

  • Numbers 20-29
  • Tens and Ones
  • Counting sequence

Learning Objectives

  • Students will be able to count from 20 to 29.
  • Students will be able to identify the number of tens and ones in numbers 20 to 29.
  • Students will be able to read and write numerals from 20 to 29.

Educator Instructions

  • Introduction (5 mins)
    Start by asking students what numbers they already know. Review counting to 20. Tell them that today, we are going to learn about numbers 20 to 29! Show them the video.
  • Video Viewing (5 mins)
    Play the video 'Learn Grade 1 - Maths - Practicing 20 to 29'. Have the students follow along.
  • Discussion (10 mins)
    After watching the video, ask students what they learned about the numbers 20-29. Discuss how each number is made up of tens and ones.
  • Activity: Counting with Objects (15 mins)
    Give each student a set of 29 small objects (e.g., counters, blocks, or beads). Have them practice counting out different numbers between 20 and 29. For example, ask them to count out 23 objects. Then, ask them how many tens and how many ones are in 23 (2 tens and 3 ones).
  • Writing Numbers (10 mins)
    Give each student a worksheet with the numbers 20-29 written in order. Have them trace the numbers and then practice writing them on their own.

Interactive Exercises

  • Number Matching Game
    Create matching cards with numerals (20-29) on some cards and pictures representing those numbers (e.g., 2 tens and 3 ones) on other cards. Have students match the numerals to the correct pictures.

Discussion Questions

  • What number comes after 25?
  • How many tens are in the number 28?
  • How many ones are in the number 22?

Skills Developed

  • Counting
  • Number Recognition
  • Understanding Place Value (Tens and Ones)

Multiple Choice Questions

Question 1:

What number comes after 24?

Correct Answer: 25

Question 2:

How many tens are in the number 27?

Correct Answer: 7

Question 3:

How many ones are in the number 21?

Correct Answer: 1

Question 4:

Which number has two tens and five ones?

Correct Answer: 25

Question 5:

What number is shown by two tens and zero ones?

Correct Answer: 20

Question 6:

If you have 23 blocks, how many groups of ten can you make?

Correct Answer: 2

Question 7:

Which number is bigger, 26 or 28?

Correct Answer: 28

Question 8:

What number is one more than 28?

Correct Answer: 29

Question 9:

What number is made up of 2 tens and 9 ones?

Correct Answer: 29

Question 10:

What is the smallest number between 20 and 29?

Correct Answer: 20

Fill in the Blank Questions

Question 1:

The number that comes after 20 is ____.

Correct Answer: 21

Question 2:

The number 24 has 2 tens and ____ ones.

Correct Answer: 4

Question 3:

The number ____ has 2 tens and 8 ones.

Correct Answer: 28

Question 4:

2 tens and 2 ones make the number ____.

Correct Answer: 22

Question 5:

The number that is one less than 26 is ____.

Correct Answer: 25

Question 6:

20, 21, 22, ____, 24. What number is missing?

Correct Answer: 23

Question 7:

The number with 2 tens and 6 ones is ____.

Correct Answer: 26

Question 8:

In the number 25, the 5 is in the ____ place.

Correct Answer: ones

Question 9:

29 is made up of two tens and ____ ones.

Correct Answer: nine

Question 10:

The number right before 29 is ____.

Correct Answer: 28

Educational Standards

CCSS.Math.Content.1.NBT.B.2:Understand that the two digits of a two-digit number represent amounts of tens and ones. Understand the following as special cases: CCSS.Math.Content.1.NBT.A.1:Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral. CCSS.Math.Content.1.OA.C.5:Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

Teaching Materials

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