how do I solve and state if it is an overestimate or an underestimate?

1.2% of 490

Do I .012 x 490
or
Do I round 1.2% to 1

I'd round to get the estimate.

0.01 * 500 = 5

Then, multiply 0.012 * 490 = 5.88

To solve this problem, you need to calculate 1.2% of 490 and then determine whether it is an overestimate or an underestimate.

To find 1.2% of 490, you can use either of the methods you mentioned:

Method 1: Calculating 1.2% of 490
To calculate 1.2% of 490, you can multiply the decimal form of 1.2% (0.012) by 490:
0.012 x 490 = 5.88

Method 2: Rounding 1.2% to 1
If you choose to round 1.2% to 1, you can then calculate 1% of 490 (which is equal to 4.9) and use this as your estimate.
1% of 490 = 4.9

Now that you have both the calculated value and the estimated value, you can compare them to determine if it is an overestimate or an underestimate.

In this case, the calculated value of 5.88 is greater than the estimated value of 4.9. Therefore, the calculated value of 5.88 is an overestimate.