Question

The decimals A and B are represented as follows:


The value of A - B = ____.

• A. 1.85
• B. 2.85
• C. 1.75
• D. 2.75

Answer 1

The correct option is A 1.85

To calculate the value of A - B, we start from the smallest place.

So, we first find the difference between the blocks in the hundredths place.


Next, to calculate the difference between the rods in the tenths place, we have to subtract 8 rods from 6 rods.

But we know, 8 > 6

So, we borrow from the ones place.


We know, 1 flat = 10 rods

Hence, after borrowing, the number of flats decrease by 1 and the number of rods increase by 10.


Now, we can directly subtract the rods in the tenths place and the flats in the ones place.


The final difference is represented by 1 flat, 8 rods, and 5 blocks.

∴ A - B = 1.85