Place Value Mental Calculation – UGC NET Question

The expression 300 + 40 + 5 represents the sum of hundreds, tens and units. Adding them stepwise, 300 + 40 = 340 and then 340 + 5 = 345. This matches the standard place value representation of the three-digit number 345. Hence, the combined value is 345.

Option A:
Option A correctly aligns each term with its place value: 300 in the hundreds place, 40 in the tens place and 5 in the ones place. Adding them produces 345, which is the number whose digits reflect these contributions.

Option B:
Option B, 354, rearranges the tens and ones positions compared to the calculation and cannot be produced by this particular sum of components.

Option C:
Option C, 435, places the 4 in the hundreds place instead of the tens place, which would require 400 rather than 40 as one of the terms.

Option D:
Option D, 453, similarly misplaces the digits and implies 400 + 50 + 3 rather than 300 + 40 + 5.