Mixed Practice: Subtract ANY 2-Digit Numbers
š The Ultimate Subtraction Test. The problems are mixed up. Some require borrowing, some don't. You are completely on your own!
Concept
This is exactly what math looks like in the real world. Nobody tells you which trick to use. You have to be a detective! šÆ **Your Detective Brain:** 1. Horizontal? Write it Vertical! (Stack it). 2. Floor Check? "More on the top, no need to stop! More on the floor, go next door!" 3. Zero on top? (Like 40 - 15). Zero is ALWAYS smaller than a number. You MUST go next door. 4. Identical numbers? (Like 46 - 46). Zero's the game! The answer is 0. Don't let your brain run on autopilot. Think about every step.
Try it
You are the detective! **Instructions:** Figure out what needs to happen, and solve. **Problem 1: 58 - 24 = ?** * Answer: ___ **Problem 2: 72 - 39 = ?** * Answer: ___ **Problem 3:** 9 6 - 9 2 -------- * Answer: ___ **Problem 4:** 3 0 - 1 5 -------- * (Hint: The zero needs help!) * Answer: ___