Estimate products – multiply by 1-digit numbers

key points :

🔢 What is Estimation?

• Estimation means finding a number close to the actual answer.
• It helps us check our answers quickly. ✅

✏️ Why Estimate Products?

• Saves time ⏱️
• Makes calculations easier 🧮
• Helps check if the answer is reasonable 👀

🔹 Steps to Estimate a Product:

1. Round the numbers to the nearest 10, 100, or simple number. 🎯
2. Multiply the rounded numbers. ✖️
3. Use this as an estimated answer. 🎉

🟢 Example 1:

• Multiply 48 × 7
• Round 48 → 50
• Multiply 50 × 7 = 350 (Estimated product)

🟡 Example 2:

• Multiply 23 × 6
• Round 23 → 20
• Multiply 20 × 6 = 120 (Estimated product)

💡 Tips for Estimation:

• Round numbers up or down to make multiplication easier. 🔼🔽
• The estimated product may not be exact, but it’s close enough. 🔍
• Great for mental math and quick checks. 🧠💨

🎨 Fun Trick:

• Use your fingers or draw dots/blocks to visualize multiplication before estimating. 🖐️🟦

📌 Remember:

• Estimation is not the exact answer, but a quick and helpful guess! ✨

Learn with an example

Let’s practice!🖊️