Calculate using expanded notation, showing steps. 72 + 806

Did I do it right?

72 + 806
(7*10) + (2*1)
+ (8*100) + (6*1)
=(8 * 100) + (7*10) + (6*1)

Good grief!

What is happening to the educational system???
72+806=878

That was rude and uncalled for! It asks for expanded notation.

Bart: You missed Dr Reiny's point. You did not add the two numbers correctly. In the units place, 8 is the correct digit, not 6.

Yes, you did it correctly. Here's a step-by-step breakdown of how you calculated using expanded notation:

1. Start by writing out each number in expanded form:
72 = (7 * 10) + (2 * 1)
806 = (8 * 100) + (0 * 10) + (6 * 1)

2. Combine like terms:
72 + 806 = (7 * 10) + (2 * 1) + (8 * 100) + (0 * 10) + (6 * 1)

3. Simplify each term:
= (70 + 2) + (800 + 6)

4. Perform the addition within each term:
= 72 + 806

So, you ended up with the correct result: 72 + 806 = 878.