If I round 123.456 to the nearest hundreth is the correct answer:

Question

123.500?

Answer 1

No. You rounded to the nearest thousandth.

The 5 is in the hundredths place. Since the next numeral is above 4, you round up.

123.46

Answer 2

1/5(x +1) + 2/5(x-1) = 3/10

2nd
0.1(2x-1) + 0.02(4x+4)= 0.05x

Answer 3

Thank you! I always get confused but now I understand and can work the rest of my problems.