Answer:
Manuel is correct, since adding 10 is the same as the tens digit going up by 1.
Step-by-step explanation:
It is important to know the concepts of units, tenths and cents.
For example
1 = 1 unit
10 = 1*10 + 0 = The tens digit is one the unit digit is 0
21 = 2*10 + 1 = The tens digit is two and the unit digit is 1.
120 = 1*100 + 2*10 + 0 = The cents digit is 1, the tens digit is two and the unit digit is 0.
So
Adding 1 is the same as the unit digit going up by 1.
Adding 10 is the same as the tens digit going up by 1.
Adding 100 is the same as the cents digit going up by 1.
In this problem, we have that:
460,470,480, 490,500,510
Each number is 10 added to the previous, that is, the tens digit going up by 1.
Manuel thinks the tens digit goes up by 1 in these numbers. Do you agree?
Manuel is correct, since adding 10 is the same as the tens digit going up by 1.
