📖

Adding 10 Mentally: Pattern Discovery

Mentally Adding and Subtracting 10 or 100

Day 141of 180
Week 29of 36
30Minutes
← Day 140Day 141 of 180Day 142 →
🖨️ Download Worksheet (PDF)🧮 Download Math Practice (PDF)
🎯 What You'll Learn

Learning Objectives

1

Understand the pattern of adding 10 to any number

2

Recognize that only the tens digit changes when adding 10

3

Develop confidence in mental math skills

📖 Scripture Connection

Proverbs 2:2

“So that you turn your ear to wisdom, and apply your heart to understanding;”

— Proverbs 2:2 (WEB)

Just as this verse encourages applying wisdom, today's lesson helps children apply mathematical patterns and understanding

📦 Materials Needed

  • hundred chart
  • base-ten blocks
  • pencil
  • paper
📚 Step-by-Step

Lesson Plan

1Opening (3 min)

Welcome to today's BibleMouse math adventure! Let's review what we learned about adding numbers last week.

💭 Review Question: Can you tell me how we solved multi-step problems in our last lesson?
2Teaching (10 min)

Today, we're going to discover a magical math pattern! When we add 10 to any number, something special happens.

📌 Key Talking Points:
  • Watch how the tens digit changes when we add 10
  • The ones digit stays exactly the same
  • This works for any number we start with
💬 Discussion Questions:
  • What do you notice happens when we add 10?
  • Can you predict what will happen before we add?
3Activity: Tens Jumping Game (12 min)
discussion

Use the hundred chart to explore adding 10 mentally

📝 Instructions:
  1. Choose a starting number
  2. Mentally add 10
  3. Check your answer on the hundred chart
  4. Record your findings
🔄 Variations:

Simpler: Use base-ten blocks to physically show adding 10

Challenge: Add 10 to three-digit numbers and explain the pattern

4Closing (3 min)

Let's review our amazing math discovery today!

📝 Review Questions:
  • What happens to the ones digit when we add 10?
  • What changes in our number?

Coming up: Tomorrow, we'll explore how to subtract 10 mentally!

👨‍👩‍👧 For Parents

Teaching Notes

📚 Background:

Mental math skills build number sense and computational fluency

💡 Teaching Tips:
  • Be patient and encourage exploration
  • Use visual aids like the hundred chart
  • Celebrate small discoveries
🤔 Common Struggles:

Children might get confused about which digit changes

👀 Signs of Understanding:

Consistent understanding that tens digit increases by 1

🚀 Want More?

Extension Activities

  • Create a 'Tens Jumping' game with BibleMouse mental math cards
  • Use BibleMouse Printables Library for additional practice worksheets

Ready for Tomorrow?

Great job completing today's lesson!

Continue to Day 142 →Back to Math