📖

Compensation Strategy: Friendly Numbers

Addition Within 100: Mental Math Strategies

Day 28of 180
Week 6of 36
30Minutes
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🖨️ Download Worksheet (PDF)🧮 Download Math Practice (PDF)
🎯 What You'll Learn

Learning Objectives

1

Understand how to adjust numbers to create friendly numbers for easier mental addition

2

Practice adding two-digit numbers using compensation strategy

3

Develop flexible mathematical thinking and problem-solving skills

📖 Scripture Connection

Proverbs 16:16

“How much better it is to get wisdom than gold! Yes, to get understanding is to be chosen above silver.”

— Proverbs 16:16 (WEB)

Just as we adjust numbers to make math easier, wisdom helps us find simpler solutions to life's challenges

📦 Materials Needed

  • Worksheet from BibleMouse Printables Library
  • Pencil
  • Hundred chart
  • Base-ten blocks (optional)
📚 Step-by-Step

Lesson Plan

1Opening (5 min)

In today's BibleMouse math lesson, we'll learn a special trick for adding numbers more easily!

💭 Review Question: Can you tell me how we added numbers yesterday using place value?
2Teaching (10 min)

Today we'll learn the compensation strategy - a fun way to make addition easier by adjusting numbers

📌 Key Talking Points:
  • Sometimes we can make addition simpler by changing one number slightly
  • We'll round numbers to make them 'friendly' - like multiples of 10
  • Then we'll adjust our final answer to keep it accurate
💬 Discussion Questions:
  • What makes a number 'friendly'?
  • How might we make 38 + 26 easier to add?
3Activity: Friendly Number Addition Challenge (12 min)
worksheet

Complete the BibleMouse worksheet using compensation strategy

📝 Instructions:
  1. Look at each problem
  2. Adjust one number to make addition easier
  3. Add the adjusted numbers
  4. Correct your answer by compensating for the adjustment
🔄 Variations:

Simpler: Use base-ten blocks to visualize number adjustments

Challenge: Create your own multi-step addition problems using compensation

4Closing (3 min)

Review our friendly number addition strategy

📝 Review Questions:
  • What does compensation mean in math?
  • How did we make numbers easier to add today?

Coming up: Tomorrow we'll learn about adding three numbers by looking for tens

👨‍👩‍👧 For Parents

Teaching Notes

📚 Background:

Compensation strategy helps children develop mental math flexibility

💡 Teaching Tips:
  • Demonstrate strategy using concrete examples
  • Encourage thinking out loud
  • Praise effort over perfect answers
🤔 Common Struggles:

Children may find adjusting numbers counterintuitive at first

👀 Signs of Understanding:

Child's ability to explain their thinking and adjust numbers strategically

🚀 Want More?

Extension Activities

  • Create a math game using compensation strategy
  • Practice compensation strategy with real-world addition problems

Ready for Tomorrow?

Great job completing today's lesson!

Continue to Day 29 →Back to Math