Meet the Math Facts Multiplication & Division – 9 x 10 = 90

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In this lesson, students learn about the multiplication fact of 9 x 10, which equals 90, and understand this concept through counting by tens. The lesson emphasizes the efficiency of multiplication as a quicker alternative to repeated addition and encourages practice with other multiplication facts to build mastery. Additionally, it highlights the everyday applications of multiplication, making math both fun and relevant.
  1. What does it mean when we say 9 times 10 equals 90?
  2. How can counting by tens help us understand multiplication better?
  3. Why do you think multiplication is helpful in our daily lives?

Meet the Math Facts: Multiplication & Division

Understanding 9 x 10 = 90

Let’s explore a fun math fact today! We’re going to learn about multiplying the number 9 by 10. When you multiply 9 by 10, you get 90. Isn’t that cool?

Counting by Tens

One way to understand this is by counting by tens. Let’s try it together:

  • 10
  • 20
  • 30
  • 40
  • 50
  • 60
  • 70
  • 80
  • 90

When you reach 90, you’ve counted ten times. That’s why 9 times 10 equals 90!

Why Multiplication is Helpful

Multiplication is a quick way to add the same number many times. Instead of adding 9 ten times, you can multiply 9 by 10 to get the same answer, which is 90. This makes math faster and easier!

Practice Makes Perfect

Try practicing with other numbers. For example, what is 5 times 10? If you count by tens five times, you get 50. Keep practicing, and you’ll become a multiplication master!

Fun Fact

Did you know that multiplication is used in many things we do every day? From counting toys to sharing snacks, multiplication helps us in many ways!

Keep exploring and having fun with math. Remember, the more you practice, the better you’ll get!

  • Can you think of a time when you used multiplication in your daily life, like when sharing toys or snacks with friends? How did it help you?
  • Why do you think counting by tens is a helpful way to understand multiplication? Can you try counting by tens with a different number, like 3 or 4?
  • Imagine you have 9 groups of 10 candies. How would you share them with your friends? How does multiplication make this easier?
  1. Counting by Tens with Objects: Gather 10 small objects like blocks or coins. Ask the children to group them into sets of 10. Have them count each set by tens (10, 20, 30, etc.) until they reach 90. This hands-on activity helps them visualize multiplication as repeated addition.

  2. Multiplication Art: Provide the children with paper and crayons. Ask them to draw a picture that shows 9 groups of 10 items, like stars or flowers. Encourage them to count the total number of items and write the multiplication sentence (9 x 10 = 90) on their artwork. This activity combines creativity with math practice.

  3. Everyday Multiplication Hunt: Challenge the children to find examples of multiplication in their daily lives. Ask them to look for situations where they see groups of items, like eggs in a carton or wheels on cars. Have them share their findings with the class and explain how multiplication helps in these scenarios.

Here’s a sanitized version of the YouTube transcript:

9 * 10 = 90
9 * 10 = 90
9 * 10 = 90
9 * 10 = 90
1 2 3 4 5 6 7 8 9 10
90
9 * 10 = 90
10 20 30 40 50 60 70 80 90 equals 90
90 equals 90
9 * 10 = 90

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This version removes any extraneous elements like music and applause indicators while maintaining the core content.

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