Question

Lucas runs 7.25 kilometers every evening. One day, he runs 5.25 kilometers and then rests for a while. How much longer does Lucas have to run further?

• A. $1.5$ kilometers
• B. $2$ kilometers
• C. $2.25$ kilometers
• D. $1.75$ kilometers

Answer 1

The correct option is B $2$ kilometers

Total kilometers Lucas runs every evening = 7.25 kilometers
Kilometers already run = 5.25 kilometers

Kilometers left to run = 7.25 kilometers - 5.25 kilometers

$\text{Let's subtract}7.25-5.25:$

Step 1: Align the decimal numbers according to their place values one below the other.
$O.th7.25-5.25-------$

Step 2: Subtract the numbers in the column from the right.

If needed, borrow a group of ten from the column to the left.


Finally, place the decimal point of the sum vertically below the other decimal points.

Hence, Lucas has 2.00 or 2 kilometers left to run.