Steps to Convert Kilograms to Grams (Grade 4 Math Lesson)

📚 Let's Get Started: Converting Kilograms to Grams

In this lesson, we'll learn how to convert kilograms (kg) to grams (g). Remember, kilograms are used to measure heavier objects, while grams are used for lighter ones. It's like comparing the weight of a big bag of potatoes to the weight of a single potato!

🎯 Objectives

• 📏 Understand the relationship between kilograms and grams.
• ➗ Learn how to convert kilograms to grams.
• 💡 Practice converting different weights from kilograms to grams.

🎒 Materials

• whiteboard or paper
• marker or pencil
• A scale (optional, for demonstration)
• Objects to weigh (e.g., books, pencils)

Warm-up (5 mins)

• ❓ Ask: What are some things we measure in kilograms? (e.g., a bag of flour, a person's weight)
• 💡 Ask: What are some things we measure in grams? (e.g., a paperclip, a cookie)

Main Instruction

Key Fact: There are 1000 grams (g) in 1 kilogram (kg).

So, to convert kilograms to grams, we multiply the number of kilograms by 1000.

Here's the formula:

Grams = Kilograms × 1000

Or, using symbols:

$g = kg \times 1000$

Example 1

Convert 2 kg to grams.

Grams = 2 kg × 1000

Grams = 2000 g

So, 2 kg is equal to 2000 g.

Example 2

Convert 5.5 kg to grams.

Grams = 5.5 kg × 1000

Grams = 5500 g

So, 5.5 kg is equal to 5500 g.

✍️ Practice Problems

• Question 1: Convert 3 kg to grams.
• Question 2: Convert 7.2 kg to grams.
• Question 3: Convert 10 kg to grams.
• Question 4: Convert 1.8 kg to grams.
• Question 5: Convert 0.5 kg to grams.
• Question 6: Convert 12.5 kg to grams.
• Question 7: Convert 25 kg to grams.

✅ Answer Key

• Answer 1: 3000 g
• Answer 2: 7200 g
• Answer 3: 10000 g
• Answer 4: 1800 g
• Answer 5: 500 g
• Answer 6: 12500 g
• Answer 7: 25000 g

📝 Assessment

Ask students to convert different weights from kilograms to grams. You can provide a worksheet with various problems or ask them verbally.

🧮 Extra Practice

Create a table like this for extra practice: