📖

Ten Less: Counting Backward by Tens

Ten More, Ten Less

Day 72of 180
Week 15of 36
30Minutes
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🖨️ Download Worksheet (PDF)🧮 Download Math Practice (PDF)
🎯 What You'll Learn

Learning Objectives

1

Subtract 10 from numbers 10-99 mentally

2

Understand how tens place changes when subtracting 10

3

Develop confidence in mathematical thinking

📖 Scripture Connection

Proverbs 3:13-14

“Happy is the man who finds wisdom, the man who gets understanding. For her good profit is better than silver, and her revenue better than gold.”

— Proverbs 3:13-14 (WEB)

Just as we learn to subtract by understanding number patterns, wisdom comes from carefully learning and understanding God's teachings

📦 Materials Needed

  • Hundred chart
  • Base-ten blocks
  • Number cards
  • Pencil
  • Worksheet
📚 Step-by-Step

Lesson Plan

1Opening (5 min)

BibleMouse Math Adventure: 'Ten Less Journey'

💭 Review Question: What did we learn yesterday about adding tens?
2Teaching (10 min)

Introducing subtraction of tens

📌 Key Talking Points:
  • When we subtract 10, only the tens place changes
  • Example: 54 - 10 = 44
  • The ones place stays the same
💬 Discussion Questions:
  • Can you show me how 63 becomes 53?
  • What happens to the number when we take away 10?
3Activity: Ten Less Treasure Hunt (12 min)
hands-on

Use hundred chart to practice subtracting tens

📝 Instructions:
  1. Start at a number on hundred chart
  2. Move DOWN one row to subtract 10
  3. Record your 'ten less' numbers
  4. Make it a game - who can find the most?
🔄 Variations:

Simpler: Use base-ten blocks to physically remove a 'ten'

Challenge: Start with two-digit subtraction problems

4Closing (3 min)

Review ten less concept

📝 Review Questions:
  • What happens to the tens place?
  • Can you subtract 10 from 45?

Coming up: Tomorrow we'll explore hundred chart patterns

👨‍👩‍👧 For Parents

Teaching Notes

📚 Background:

Children are developing mental math strategies

💡 Teaching Tips:
  • Use visual aids like hundred chart
  • Make math feel like a fun game
  • Praise effort over perfection
🤔 Common Struggles:

Remembering to only change tens place

👀 Signs of Understanding:

Consistent understanding of ten less concept

🚀 Want More?

Extension Activities

  • Create a 'Ten Less' board game
  • Use BibleMouse Printables Library for additional worksheets

Ready for Tomorrow?

Great job completing today's lesson!

Continue to Day 73 →Back to Math