Understanding Division by Multiples of 10
Dividing by multiples of 10 is easier than you think!
When we divide a 2-digit number by 10, 20, 30, etc., we're really just counting how many groups of that number fit into our total. It's like sharing cookies equally among friends!
Simple Steps to Solve
1️⃣ Understand the problem: How many groups of [multiple of 10] fit into [2-digit number]?
2️⃣ Think of dividing by 10 first: For example, 60 ÷ 30 is the same as (60 ÷ 10) ÷ 3
3️⃣ Count the groups: Use your multiplication facts to help with division!
Let's Practice Together!
Example 1: Cookie Sharing
You have 60 cookies to share equally among 30 friends. How many cookies does each friend get?
Let's solve: 60 ÷ 30 = ?
Think: How many groups of 30 are in 60?
That's right! 30 × 2 = 60, so 60 ÷ 30 = 2. Each friend gets 2 cookies!
Example 2: Pencil Boxes
There are 80 pencils that need to be packed into boxes that hold 20 pencils each. How many boxes will you need?
Let's solve: 80 ÷ 20 = ?
Think: How many groups of 20 are in 80?
Great job! 20 × 4 = 80, so 80 ÷ 20 = 4. You'll need 4 boxes!
Parent Tips 🌟
- Use real objects: Have your child divide small items (like coins or blocks) into groups of 10 to visualize the concept.
- Connect to multiplication: Remind them that division is the opposite of multiplication - if 3 × 20 = 60, then 60 ÷ 20 = 3.
- Practice with zeroes: Show how dividing by 10, 20, 30 is similar to dividing by 1, 2, 3 and then adjusting for the zero.