Counting Superpowers: Skip Counting by 100s!

Math Grades 1st Grade 2:48 Video
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Lesson Description

Learn to skip count by 100s using fun examples and practice problems! Boost your math skills and become a counting superhero!

Video Resource

Skip counting by 100 example | Addition and subtraction within 100 | Early Math | Khan Academy

Khan Academy

Duration: 2:48
Watch on YouTube

Key Concepts

  • Skip Counting
  • Hundreds Place
  • Place Value
  • Addition

Learning Objectives

  • Students will be able to skip count by 100s starting from a given number.
  • Students will be able to identify the hundreds place in a three-digit number.
  • Students will be able to extend the counting sequence beyond 100 by adding 100s.

Educator Instructions

  • Introduction (5 mins)
    Begin by asking students what they already know about counting. Review counting by 10s. Explain that today they will learn a new way to count - by 100s! Tell them it's like super-fast counting.
  • Video Viewing (7 mins)
    Play the Khan Academy video: 'Skip counting by 100 example | Addition and subtraction within 100 | Early Math | Khan Academy'. Encourage students to follow along and pay attention to how the numbers change.
  • Guided Practice (10 mins)
    After the video, write the number 23 on the board. Ask students what number comes next if we are counting by 100s. (123). Continue with 223, 323, 423, etc. Emphasize that only the hundreds place is changing. Do this with different starting numbers (e.g., 17, 54).
  • Independent Practice (10 mins)
    Provide students with a worksheet with number lines and starting numbers. Have them fill in the missing numbers by skip counting by 100s. Example: 35, ___, ___, ___, ___.
  • Wrap-up (3 mins)
    Review what they learned about skip counting by 100s. Ask them where they might see skip counting in the real world (e.g., counting money). Congratulate them on becoming counting superheroes!

Interactive Exercises

  • Number Chart Fun
    Use a 1-120 number chart. Have students color in numbers as they skip count by 100s, starting at different numbers. This helps them visualize the pattern.
  • Act It Out!
    Divide the class into groups. Give each group a set of cards with numbers on them. Have them line up in order, counting by 100s. This makes it a physical and active learning experience.

Discussion Questions

  • What happens to the number when we add 100?
  • What digit changes when we count by 100s?
  • Can you think of a time when it would be helpful to count by 100s?

Skills Developed

  • Skip Counting
  • Number Recognition
  • Place Value Understanding
  • Addition

Multiple Choice Questions

Question 1:

What comes after 15 when you count by 100s?

Correct Answer: 115

Question 2:

If you count by 100s, which of these numbers will you NOT say?

Correct Answer: 34

Question 3:

What is the hundreds place in the number 456?

Correct Answer: 4

Question 4:

Which number is 100 more than 27?

Correct Answer: 127

Question 5:

I am counting by 100s. I say 5, then 105. What comes next?

Correct Answer: 205

Question 6:

Which one shows counting by 100s?

Correct Answer: 22, 122, 222

Question 7:

What is 100 more than 345?

Correct Answer: 445

Question 8:

When counting by 100s, which place changes?

Correct Answer: Hundreds

Question 9:

I start at 88. What is the next number I say when counting by 100s?

Correct Answer: 188

Question 10:

Which of these is the biggest number when counting by 100s?

Correct Answer: 212

Fill in the Blank Questions

Question 1:

When counting by 100s, the _______ place changes.

Correct Answer: hundreds

Question 2:

12 + 100 = _______

Correct Answer: 112

Question 3:

If I count 1, 101, ______, I am counting by 100s.

Correct Answer: 201

Question 4:

The number 345 has ______ hundreds.

Correct Answer: 3

Question 5:

23 + 100 + 100 = _______

Correct Answer: 223

Question 6:

Skip counting by 100s is like super fast _______.

Correct Answer: counting

Question 7:

If I start at 7, the next number when counting by 100s is _______.

Correct Answer: 107

Question 8:

The number after 200 when counting by 100s is _______.

Correct Answer: 300

Question 9:

To count by 100s, you add _______ to the last number.

Correct Answer: 100

Question 10:

Counting by 100s helps you count _______ quickly.

Correct Answer: numbers

Educational Standards

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. 1.NBT.C.5:Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used. 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.

Teaching Materials

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