Multiplying Big Numbers
Ready for a multiplication adventure?
When we multiply a 2-digit number by a larger number, we're just breaking down a big problem into smaller, easier steps. It's like building with blocks - we work with one piece at a time!
How to Multiply Step by Step
1️⃣ Break it down: Multiply the 2-digit number by each digit of the larger number separately
2️⃣ Add zeros: Remember to add zeros when moving to the next place value
3️⃣ Add them up: Combine all your partial products to get the final answer
Let's Try Some Examples!
Example 1: 24 × 123
Let's break it down:
24 × 100 = 2,400
24 × 20 = 480
24 × 3 = 72
Now add them together: 2,400 + 480 + 72 = ?
2,400 + 480 = 2,880
2,880 + 72 = 2,952
Final answer: 2,952
Example 2: 56 × 305
Let's solve it step by step:
56 × 300 = 16,800
56 × 0 = 0 (tens place is 0!)
56 × 5 = 280
Now add them together: 16,800 + 0 + 280 = ?
16,800 + 0 = 16,800
16,800 + 280 = 17,080
Final answer: 17,080
Parent Tips 🌟
- Use real-world examples: Calculate costs of multiple items ("If one toy costs $24, how much for 123 toys?") to make it practical
- Break it down visually: Use graph paper to show multiplication as area (draw 24 rows × 123 columns)
- Celebrate small wins: Praise each correct step in the process, not just the final answer