Subtraction Sentences: Which is True?
🤥 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)!
Do this: Read the concept below, then try the quiz or activity.
Concept
Just like with addition, a subtraction sentence must be perfectly balanced to be true.
🎯 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: ___ - ___ = ___