An estimate for ^123 is?

A. 10
B. 11
C. 12
D. 13

How do I do this please help!!

Is it 11?

correct.

To estimate ^123, you can follow these steps:

Step 1: Identify the nearest power of 10 to 123, which is 100.

Step 2: Determine the square root of the nearest power of 10 found in step 1. The square root of 100 is 10.

Step 3: Divide the given number (123) by the square root found in step 2. 123 ÷ 10 = 12.3

Step 4: Round the result from step 3 to the nearest whole number. In this case, 12.3 rounds to 12.

Therefore, the estimated value of ^123 is 12.

Based on the options given, the answer is C. 12.

To estimate ^123, you can use rounding. Here's how to do it:

1. Look at the first digit, which is 1 in this case.
2. If the first digit is 1, 2, 3, or 4, you can round down to 10.
3. If the first digit is 5, 6, 7, 8, or 9, you can round up to 20.

In this case, since the first digit is 1, you would round down to 10. Therefore, the estimate for ^123 is A. 10.