Subtraction Sentences: Which is True?
š¤„ Is that subtraction sentence lying to you? It's time to put on your detective glasses and solve the left side to prove the right side is true (or false)!
Concept
Just like with addition, a subtraction sentence must be perfectly balanced to be true. šÆ **Testing the Seesaw:** Look at this sentence: **16 - 7 = 8** 1. Do the math on the left side: 16 - 7 = 9. 2. Check the right side: The right side says 8. 3. Does 9 = 8? No way! This sentence is a huge fib. It is **FALSE**. What about this one? **14 - 9 = 5** 1. Do the math: 14 - 9 = 5. 2. Check the right side: It says 5. 3. Does 5 = 5? Yes! Perfect balance. This sentence is **TRUE**.
Try it
Detect the subtraction fakes! **Instructions:** Solve the subtraction. Does the answer match? Circle True or False. **1. 12 - 4 = 8** * True / False **2. 18 - 9 = 10** * True / False **3. 15 - 5 = 10** * True / False **4. 20 - 5 = 14** * True / False **5. 11 - 3 = 8** * True / False **Correction Challenge:** Find the FALSE sentence below, and rewrite it so it becomes TRUE! A) 13 - 6 = 7 B) 17 - 8 = 9 C) 14 - 5 = 8 * Make the false one true: ___ - ___ = ___