A) round 25.452 to one decimal place.

b) round $34.374 to two decimal places

a) $25.5

b) $34.37

Step-by-step explanation:

Requirement A

We know that decimal means a system of numbers based on the fraction. We can write the decimal in the form of dot or tenth, hundredth, and so on.

For the first number, as the question suggests, to take one decimal place, therefore, the answer will be $25.5.

After one decimal place, if the next number is 5 or more, the previous position of the number will be added by 1. Therefore, the decimal place of 4 will become 5 = (4+1).

Requirement B

For the second number, as the question suggests, to take two decimal places, therefore, the answer will be $34.37.

In this question, we cannot add 1 with the second decimal place of the number that is 7 because the third decimal place is less than 5. Therefore, it will remain the same as 7. So we can conclude that less than 5 cannot help adding 1 with the previous decimal place.

a - base

b - exponent

so,