You’ll see the identity property everywhere once you know what to look for. 9 + 0 = 9. 1,546 + 0 = 1,546. Even that weird number like -3.5 + 0 = -3.5.
Fractions? Yep. ⅞ + 0 = ⅞. Decimals? Absolutely. 0.99 + 0 = 0.99. Zero doesn’t discriminate. It treats all numbers with equal apathy.
Watch out for trick questions, though. If someone asks, “What is 12 + 0?” don’t overthink it. You’re not being tested on rocket science. You’re being tested on whether you know that 12 is still 12.
