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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
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B
2 kilometers
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C
2.25 kilometers
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D
1.75 kilometers
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Solution

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

Let's subtract 7.255.25:

Step 1: Align the decimal numbers according to their place values one below the other.
O . t h 7 . 2 5 5 . 2 5

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.

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