Understanding the Concept
Multiplication is like repeated addition!
When we multiply a 1-digit number by a 2-digit number, we're adding the 2-digit number multiple times.
For example, 4 × 23 is the same as 23 + 23 + 23 + 23. But there's a faster way using the distributive property!
How to Multiply Step-by-Step
1️⃣ Break it down: Split the 2-digit number into tens and ones (e.g., 23 = 20 + 3)
2️⃣ Multiply separately: Multiply the 1-digit number by both parts (e.g., 4 × 20 and 4 × 3)
3️⃣ Add the results: Combine your two answers to get the final product (80 + 12 = 92)
Let's Practice Together!
Example 1: 5 × 14
Let's break it down:
5 × 14 = 5 × (10 + 4) = (5 × 10) + (5 × 4) = + =
Visualizing with arrays:
Example 2: 7 × 36
Now you try! Fill in the blanks:
7 × 36 = 7 × (30 + 6) = (7 × ) + (7 × ) = + =
Parent Tips 🌟
- Use real-world examples: Ask your child to calculate totals when buying multiple items (e.g., 6 boxes of crayons at $12 each).
- Make it visual: Draw arrays or use blocks to show how multiplication breaks down into smaller, manageable parts.
- Practice with games: Play multiplication card games where they multiply a single-digit card by a two-digit card.