K-5 friendly lesson

Try one idea, then jump into the activity.These lessons are designed to feel short, friendly, and easy to follow.

Use Compensation to Subtract up to 3 Digits

🦊 The Bandit strikes again! A terrible number like 199 is trying to ruin your day. Steal exactly 200, and give 1 back!

Lesson 1

Concept

When you see numbers ending in 98 or 99, never stack them and try to borrow. It takes forever. 🎯 **The "Steal and Return" Strategy:** **Example: 546 - 299 = ?** Subtracting 299 requires double borrowing. It is a nightmare. 1. **The Trick:** 299 is practically 300. Just steal 300! 2. **The Math:** 546 - 300 = 246. (Super easy, just spinning the hundreds dial!). 3. **Wait!** I stole TOO MUCH. I was only supposed to take 299 things. I accidentally took 1 extra thing. 4. **The Fix:** I must GIVE ONE BACK. (ADD 1!). 246 + 1 = 247! 5. **Answer:** **247**. You successfully subtracted an insane number entirely inside your head.

Try it

Steal too much, pay it back! **Instructions:** Subtract a perfect hundred, then ADD exactly 1 or 2 back onto your answer to fix the theft! **Problem 1: 832 - 199 = ?** * Steal 200! (832 - 200 = _____ ). * Give 1 back! (Add +1). * Answer: ___ **Problem 2: 651 - 398 = ?** * Steal 400! (651 - 400 = _____ ). * Give 2 back! (Add +2, because 398 is 2 away from 400!). * Answer: ___ **Problem 3: 477 - 99 = ?** * Answer: ___ **Problem 4: 914 - 498 = ?** * Answer: ___